diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinEntitiesJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep1Job.java
similarity index 52%
rename from dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinEntitiesJob.java
rename to dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep1Job.java
index 868faa8f56..1be782a127 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinEntitiesJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep1Job.java
@@ -11,7 +11,7 @@ import org.apache.spark.api.java.function.MapFunction;
 import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Encoders;
 import org.apache.spark.sql.SaveMode;
-import org.apache.spark.sql.expressions.Aggregator;
+import org.apache.spark.sql.TypedColumn;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -22,15 +22,15 @@ import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedProject;
 import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedProjectAggregator;
 import scala.Tuple2;
 
-public class JoinEntitiesJob {
+public class JoinStep1Job {
 
-	private static final Logger log = LoggerFactory.getLogger(JoinEntitiesJob.class);
+	private static final Logger log = LoggerFactory.getLogger(JoinStep1Job.class);
 
 	public static void main(final String[] args) throws Exception {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
 				.toString(
-					JoinEntitiesJob.class
+					JoinStep1Job.class
 						.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.json")));
 		parser.parseArgument(args);
 
@@ -43,7 +43,7 @@ public class JoinEntitiesJob {
 		final String workingPath = parser.get("workingPath");
 		log.info("workingPath: {}", workingPath);
 
-		final String joinedEntitiesPath = workingPath + "/joinedEntities";
+		final String joinedEntitiesPath = workingPath + "/joinedEntities_step1";
 		log.info("joinedEntitiesPath: {}", joinedEntitiesPath);
 
 		final SparkConf conf = new SparkConf();
@@ -52,39 +52,28 @@ public class JoinEntitiesJob {
 
 			ClusterUtils.removeDir(spark, joinedEntitiesPath);
 
-			final Dataset<OaBrokerMainEntity> r0 = ClusterUtils
+			final Dataset<OaBrokerMainEntity> sources = ClusterUtils
 				.readPath(spark, workingPath + "/simpleEntities", OaBrokerMainEntity.class);
 
-			final Dataset<OaBrokerMainEntity> r1 = join(
-				r0, ClusterUtils.readPath(spark, workingPath + "/relatedProjects", RelatedProject.class),
-				new RelatedProjectAggregator());
-			// final Dataset<OaBrokerMainEntity> r2 = join(
-			// r1, ClusterUtils.readPath(spark, workingPath + "/relatedDatasets", RelatedDataset.class), new
-			// RelatedDatasetAggregator());
-			// final Dataset<OaBrokerMainEntity> r3 = join(
-			// r2, ClusterUtils.readPath(spark, workingPath + "/relatedPublications", RelatedPublication.class), new
-			// RelatedPublicationAggregator());
-			// final Dataset<OaBrokerMainEntity> r4 = join(
-			// r3, ClusterUtils.readPath(spark, workingPath + "/relatedSoftwares", RelatedSoftware.class), new
-			// RelatedSoftwareAggregator());
+			final Dataset<RelatedProject> typedRels = ClusterUtils
+				.readPath(spark, workingPath + "/relatedProjects", RelatedProject.class);
 
-			r1.write().mode(SaveMode.Overwrite).json(joinedEntitiesPath);
+			final TypedColumn<Tuple2<OaBrokerMainEntity, RelatedProject>, OaBrokerMainEntity> aggr = new RelatedProjectAggregator()
+				.toColumn();
+
+			sources
+				.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
+				.groupByKey(
+					(MapFunction<Tuple2<OaBrokerMainEntity, RelatedProject>, String>) t -> t._1.getOpenaireId(),
+					Encoders.STRING())
+				.agg(aggr)
+				.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class))
+				.write()
+				.mode(SaveMode.Overwrite)
+				.json(joinedEntitiesPath);
 
 		});
 
 	}
 
-	private static <T> Dataset<OaBrokerMainEntity> join(final Dataset<OaBrokerMainEntity> sources,
-		final Dataset<T> typedRels,
-		final Aggregator<Tuple2<OaBrokerMainEntity, T>, OaBrokerMainEntity, OaBrokerMainEntity> aggr) {
-
-		return sources
-			.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
-			.groupByKey(
-				(MapFunction<Tuple2<OaBrokerMainEntity, T>, String>) t -> t._1.getOpenaireId(), Encoders.STRING())
-			.agg(aggr.toColumn())
-			.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class));
-
-	}
-
 }
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep2Job.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep2Job.java
new file mode 100644
index 0000000000..103d795530
--- /dev/null
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep2Job.java
@@ -0,0 +1,79 @@
+
+package eu.dnetlib.dhp.broker.oa;
+
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
+
+import java.util.Optional;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.spark.SparkConf;
+import org.apache.spark.api.java.function.MapFunction;
+import org.apache.spark.sql.Dataset;
+import org.apache.spark.sql.Encoders;
+import org.apache.spark.sql.SaveMode;
+import org.apache.spark.sql.TypedColumn;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedSoftware;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedSoftwareAggregator;
+import scala.Tuple2;
+
+public class JoinStep2Job {
+
+	private static final Logger log = LoggerFactory.getLogger(JoinStep2Job.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+			IOUtils
+				.toString(
+					JoinStep2Job.class
+						.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.json")));
+		parser.parseArgument(args);
+
+		final Boolean isSparkSessionManaged = Optional
+			.ofNullable(parser.get("isSparkSessionManaged"))
+			.map(Boolean::valueOf)
+			.orElse(Boolean.TRUE);
+		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
+
+		final String workingPath = parser.get("workingPath");
+		log.info("workingPath: {}", workingPath);
+
+		final String joinedEntitiesPath = workingPath + "/joinedEntities_step2";
+		log.info("joinedEntitiesPath: {}", joinedEntitiesPath);
+
+		final SparkConf conf = new SparkConf();
+
+		runWithSparkSession(conf, isSparkSessionManaged, spark -> {
+
+			ClusterUtils.removeDir(spark, joinedEntitiesPath);
+
+			final Dataset<OaBrokerMainEntity> sources = ClusterUtils
+				.readPath(spark, workingPath + "/joinedEntities_step1", OaBrokerMainEntity.class);
+
+			final Dataset<RelatedSoftware> typedRels = ClusterUtils
+				.readPath(spark, workingPath + "/relatedSoftwares", RelatedSoftware.class);
+
+			final TypedColumn<Tuple2<OaBrokerMainEntity, RelatedSoftware>, OaBrokerMainEntity> aggr = new RelatedSoftwareAggregator()
+				.toColumn();
+
+			sources
+				.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
+				.groupByKey(
+					(MapFunction<Tuple2<OaBrokerMainEntity, RelatedSoftware>, String>) t -> t._1.getOpenaireId(),
+					Encoders.STRING())
+				.agg(aggr)
+				.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class))
+				.write()
+				.mode(SaveMode.Overwrite)
+				.json(joinedEntitiesPath);
+
+		});
+
+	}
+
+}
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep3Job.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep3Job.java
new file mode 100644
index 0000000000..ceb199dc45
--- /dev/null
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep3Job.java
@@ -0,0 +1,79 @@
+
+package eu.dnetlib.dhp.broker.oa;
+
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
+
+import java.util.Optional;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.spark.SparkConf;
+import org.apache.spark.api.java.function.MapFunction;
+import org.apache.spark.sql.Dataset;
+import org.apache.spark.sql.Encoders;
+import org.apache.spark.sql.SaveMode;
+import org.apache.spark.sql.TypedColumn;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDataset;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDatasetAggregator;
+import scala.Tuple2;
+
+public class JoinStep3Job {
+
+	private static final Logger log = LoggerFactory.getLogger(JoinStep3Job.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+			IOUtils
+				.toString(
+					JoinStep3Job.class
+						.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.json")));
+		parser.parseArgument(args);
+
+		final Boolean isSparkSessionManaged = Optional
+			.ofNullable(parser.get("isSparkSessionManaged"))
+			.map(Boolean::valueOf)
+			.orElse(Boolean.TRUE);
+		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
+
+		final String workingPath = parser.get("workingPath");
+		log.info("workingPath: {}", workingPath);
+
+		final String joinedEntitiesPath = workingPath + "/joinedEntities_step3";
+		log.info("joinedEntitiesPath: {}", joinedEntitiesPath);
+
+		final SparkConf conf = new SparkConf();
+
+		runWithSparkSession(conf, isSparkSessionManaged, spark -> {
+
+			ClusterUtils.removeDir(spark, joinedEntitiesPath);
+
+			final Dataset<OaBrokerMainEntity> sources = ClusterUtils
+				.readPath(spark, workingPath + "/joinedEntities_step2", OaBrokerMainEntity.class);
+
+			final Dataset<RelatedDataset> typedRels = ClusterUtils
+				.readPath(spark, workingPath + "/relatedDatasets", RelatedDataset.class);
+
+			final TypedColumn<Tuple2<OaBrokerMainEntity, RelatedDataset>, OaBrokerMainEntity> aggr = new RelatedDatasetAggregator()
+				.toColumn();
+
+			sources
+				.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
+				.groupByKey(
+					(MapFunction<Tuple2<OaBrokerMainEntity, RelatedDataset>, String>) t -> t._1.getOpenaireId(),
+					Encoders.STRING())
+				.agg(aggr)
+				.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class))
+				.write()
+				.mode(SaveMode.Overwrite)
+				.json(joinedEntitiesPath);
+
+		});
+
+	}
+
+}
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep4Job.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep4Job.java
new file mode 100644
index 0000000000..3067810dd5
--- /dev/null
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep4Job.java
@@ -0,0 +1,79 @@
+
+package eu.dnetlib.dhp.broker.oa;
+
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
+
+import java.util.Optional;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.spark.SparkConf;
+import org.apache.spark.api.java.function.MapFunction;
+import org.apache.spark.sql.Dataset;
+import org.apache.spark.sql.Encoders;
+import org.apache.spark.sql.SaveMode;
+import org.apache.spark.sql.TypedColumn;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedPublication;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedPublicationAggregator;
+import scala.Tuple2;
+
+public class JoinStep4Job {
+
+	private static final Logger log = LoggerFactory.getLogger(JoinStep4Job.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+			IOUtils
+				.toString(
+					JoinStep4Job.class
+						.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.json")));
+		parser.parseArgument(args);
+
+		final Boolean isSparkSessionManaged = Optional
+			.ofNullable(parser.get("isSparkSessionManaged"))
+			.map(Boolean::valueOf)
+			.orElse(Boolean.TRUE);
+		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
+
+		final String workingPath = parser.get("workingPath");
+		log.info("workingPath: {}", workingPath);
+
+		final String joinedEntitiesPath = workingPath + "/joinedEntities_step4";
+		log.info("joinedEntitiesPath: {}", joinedEntitiesPath);
+
+		final SparkConf conf = new SparkConf();
+
+		runWithSparkSession(conf, isSparkSessionManaged, spark -> {
+
+			ClusterUtils.removeDir(spark, joinedEntitiesPath);
+
+			final Dataset<OaBrokerMainEntity> sources = ClusterUtils
+				.readPath(spark, workingPath + "/joinedEntities_step3", OaBrokerMainEntity.class);
+
+			final Dataset<RelatedPublication> typedRels = ClusterUtils
+				.readPath(spark, workingPath + "/relatedPublications", RelatedPublication.class);
+
+			final TypedColumn<Tuple2<OaBrokerMainEntity, RelatedPublication>, OaBrokerMainEntity> aggr = new RelatedPublicationAggregator()
+				.toColumn();
+
+			sources
+				.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
+				.groupByKey(
+					(MapFunction<Tuple2<OaBrokerMainEntity, RelatedPublication>, String>) t -> t._1.getOpenaireId(),
+					Encoders.STRING())
+				.agg(aggr)
+				.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class))
+				.write()
+				.mode(SaveMode.Overwrite)
+				.json(joinedEntitiesPath);
+
+		});
+
+	}
+
+}
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareGroupsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareGroupsJob.java
index 934ddff59a..47a9f36c5f 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareGroupsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareGroupsJob.java
@@ -32,7 +32,7 @@ public class PrepareGroupsJob {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
 				.toString(
-					JoinEntitiesJob.class
+					PrepareGroupsJob.class
 						.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.json")));
 		parser.parseArgument(args);
 
@@ -58,7 +58,7 @@ public class PrepareGroupsJob {
 			ClusterUtils.removeDir(spark, groupsPath);
 
 			final Dataset<OaBrokerMainEntity> results = ClusterUtils
-				.readPath(spark, workingPath + "/joinedEntities", OaBrokerMainEntity.class);
+				.readPath(spark, workingPath + "/joinedEntities_step4", OaBrokerMainEntity.class);
 
 			final Dataset<Relation> mergedRels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
index fe9c87e877..6e006ccf02 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedDatasetsJob.java
@@ -61,6 +61,7 @@ public class PrepareRelatedDatasetsJob {
 
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
+				.filter(r -> r.getDataInfo().getDeletedbyinference())
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_RESULT))
 				.filter(r -> ClusterUtils.isValidResultResultClass(r.getRelClass()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedProjectsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedProjectsJob.java
index 3ae240982d..0af5d21b78 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedProjectsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedProjectsJob.java
@@ -13,8 +13,6 @@ import org.apache.spark.sql.SaveMode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import eu.dnetlib.broker.objects.OaBrokerProject;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
@@ -29,8 +27,6 @@ public class PrepareRelatedProjectsJob {
 
 	private static final Logger log = LoggerFactory.getLogger(PrepareRelatedProjectsJob.class);
 
-	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
-
 	public static void main(final String[] args) throws Exception {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
@@ -67,6 +63,7 @@ public class PrepareRelatedProjectsJob {
 
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
+				.filter(r -> r.getDataInfo().getDeletedbyinference())
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_PROJECT))
 				.filter(r -> !r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
index 8814ef3e09..84752776e2 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedPublicationsJob.java
@@ -13,8 +13,6 @@ import org.apache.spark.sql.SaveMode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import eu.dnetlib.broker.objects.OaBrokerRelatedPublication;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
@@ -28,8 +26,6 @@ public class PrepareRelatedPublicationsJob {
 
 	private static final Logger log = LoggerFactory.getLogger(PrepareRelatedPublicationsJob.class);
 
-	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
-
 	public static void main(final String[] args) throws Exception {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
@@ -68,6 +64,7 @@ public class PrepareRelatedPublicationsJob {
 
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
+				.filter(r -> r.getDataInfo().getDeletedbyinference())
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_RESULT))
 				.filter(r -> ClusterUtils.isValidResultResultClass(r.getRelClass()))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedSoftwaresJob.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedSoftwaresJob.java
index 0704fb44a8..0ad753a974 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedSoftwaresJob.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/PrepareRelatedSoftwaresJob.java
@@ -13,8 +13,6 @@ import org.apache.spark.sql.SaveMode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import eu.dnetlib.broker.objects.OaBrokerRelatedSoftware;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
@@ -29,8 +27,6 @@ public class PrepareRelatedSoftwaresJob {
 
 	private static final Logger log = LoggerFactory.getLogger(PrepareRelatedSoftwaresJob.class);
 
-	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
-
 	public static void main(final String[] args) throws Exception {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
@@ -67,6 +63,7 @@ public class PrepareRelatedSoftwaresJob {
 
 			final Dataset<Relation> rels = ClusterUtils
 				.readPath(spark, graphPath + "/relation", Relation.class)
+				.filter(r -> r.getDataInfo().getDeletedbyinference())
 				.filter(r -> r.getRelType().equals(ModelConstants.RESULT_RESULT))
 				.filter(r -> !r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS))
 				.filter(r -> !ClusterUtils.isDedupRoot(r.getSource()))
diff --git a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
index 18e2eedca8..8752200ffa 100644
--- a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
@@ -216,14 +216,86 @@
         <error to="Kill"/>
     </action>
  
-	<join name="wait_entities_and_rels" to="join_entities"/>
+	<join name="wait_entities_and_rels" to="join_entities_step1"/>
     
-    <action name="join_entities">
+    <action name="join_entities_step1">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>
             <mode>cluster</mode>
-            <name>JoinEntitiesJob</name>
-            <class>eu.dnetlib.dhp.broker.oa.JoinEntitiesJob</class>
+            <name>JoinStep1</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep1Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step2"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step2">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep2</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep2Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step3"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step3">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep3</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep3Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step4"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step4">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep4</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep4Job</class>
             <jar>dhp-broker-events-${projectVersion}.jar</jar>
             <spark-opts>
                 --executor-cores=${sparkExecutorCores}
diff --git a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/partial/oozie_app/workflow.xml b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/partial/oozie_app/workflow.xml
index 1ccdef929f..26fa429e61 100644
--- a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/partial/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/partial/oozie_app/workflow.xml
@@ -73,19 +73,19 @@
         </configuration>
     </global>
 
-    <start to="join_entities"/>
+    <start to="join_entities_step1"/>
 
     <kill name="Kill">
         <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
     </kill>
     
     
-    <action name="join_entities">
+        <action name="join_entities_step1">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>
             <mode>cluster</mode>
-            <name>JoinEntitiesJob</name>
-            <class>eu.dnetlib.dhp.broker.oa.JoinEntitiesJob</class>
+            <name>JoinStep1</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep1Job</class>
             <jar>dhp-broker-events-${projectVersion}.jar</jar>
             <spark-opts>
                 --executor-cores=${sparkExecutorCores}
@@ -100,16 +100,16 @@
             <arg>--graphPath</arg><arg>${graphInputPath}</arg>
             <arg>--workingPath</arg><arg>${workingPath}</arg>
         </spark>
-        <ok to="prepare_groups"/>
+        <ok to="join_entities_step2"/>
         <error to="Kill"/>
     </action>
-
-    <action name="prepare_groups">
+    
+    <action name="join_entities_step2">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>
             <mode>cluster</mode>
-            <name>PrepareGroupsJob</name>
-            <class>eu.dnetlib.dhp.broker.oa.PrepareGroupsJob</class>
+            <name>JoinStep2</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep2Job</class>
             <jar>dhp-broker-events-${projectVersion}.jar</jar>
             <spark-opts>
                 --executor-cores=${sparkExecutorCores}
@@ -124,16 +124,16 @@
             <arg>--graphPath</arg><arg>${graphInputPath}</arg>
             <arg>--workingPath</arg><arg>${workingPath}</arg>
         </spark>
-        <ok to="generate_events"/>
+        <ok to="join_entities_step3"/>
         <error to="Kill"/>
     </action>
-
-    <action name="generate_events">
+    
+    <action name="join_entities_step3">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>
             <mode>cluster</mode>
-            <name>GenerateEventsJob</name>
-            <class>eu.dnetlib.dhp.broker.oa.GenerateEventsJob</class>
+            <name>JoinStep3</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep3Job</class>
             <jar>dhp-broker-events-${projectVersion}.jar</jar>
             <spark-opts>
                 --executor-cores=${sparkExecutorCores}
@@ -145,9 +145,32 @@
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
                 --conf spark.sql.shuffle.partitions=3840
             </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step4"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step4">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep4</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep4Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
             <arg>--workingPath</arg><arg>${workingPath}</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
-            <arg>--dedupConfProfile</arg><arg>${dedupConfProfId}</arg>
         </spark>
         <ok to="End"/>
         <error to="Kill"/>