diff --git a/CHANGES.md b/CHANGES.md
index 6b0a2ff..9e73eb0 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,8 +2,9 @@
 
 ## Changelog
 
-| **Version** | **Changes**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | **Readiness** |
-|-------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
+| **Version** | **Changes**                                                                                                                                                                                                                                                                                 | **Readiness** |
+|-------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
+| 2.12.0      | [Graph model] </br> <ul><li>Introducing EOSC Services as datasources</li>  <ul> | beta |
 | 2.11.33     | [Scholexplorer] </br> <ul><li>Moved Scholix API Data model into dhp-schemas</li><li>implementation of the compareTo method on Scholix objects and all model properties</li> <li>Unit Test to verify that compareTo works on different case</li>  <ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | beta |
 | 2.10.31     | [Minor] </br>NPE checks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | beta |
 | 2.10.30     | [Minor] </br>added comparator for refereed field instances                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | beta |
diff --git a/pom.xml b/pom.xml
index bac1262..ff8ae1e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>eu.dnetlib.dhp</groupId>
     <artifactId>dhp-schemas</artifactId>
     <packaging>jar</packaging>
-    <version>2.11.34-eosc-SNAPSHOT</version>
+    <version>2.12.0-SNAPSHOT</version>
 
     <licenses>
         <license>
diff --git a/src/main/java/eu/dnetlib/dhp/schema/oaf/Datasource.java b/src/main/java/eu/dnetlib/dhp/schema/oaf/Datasource.java
index 510df87..54cfc8a 100644
--- a/src/main/java/eu/dnetlib/dhp/schema/oaf/Datasource.java
+++ b/src/main/java/eu/dnetlib/dhp/schema/oaf/Datasource.java
@@ -556,141 +556,6 @@ public class Datasource extends OafEntity implements Serializable {
 	@Override
 	public void mergeFrom(final OafEntity e) {
 		super.mergeFrom(e);
-
-		if (!Datasource.class.isAssignableFrom(e.getClass())) { return; }
-
-		final Datasource d = (Datasource) e;
-
-		datasourcetype = d.getDatasourcetype() != null && compareTrust(this, e) < 0
-			? d.getDatasourcetype()
-			: datasourcetype;
-		datasourcetypeui = d.getDatasourcetypeui() != null && compareTrust(this, e) < 0
-			? d.getDatasourcetypeui()
-			: datasourcetypeui;
-		eosctype = d.getEosctype() != null && compareTrust(this, e) < 0
-				? d.getEosctype()
-				: eosctype;
-		eoscdatasourcetype = d.getEoscdatasourcetype() != null && compareTrust(this, e) < 0
-				? d.getEoscdatasourcetype()
-				: eoscdatasourcetype;
-		openairecompatibility = d.getOpenairecompatibility() != null && compareTrust(this, e) < 0
-			? d.getOpenairecompatibility()
-			: openairecompatibility;
-		officialname = d.getOfficialname() != null && compareTrust(this, e) < 0
-			? d.getOfficialname()
-			: officialname;
-		englishname = d.getEnglishname() != null && compareTrust(this, e) < 0 ? d.getEnglishname() : officialname;
-		websiteurl = d.getWebsiteurl() != null && compareTrust(this, e) < 0 ? d.getWebsiteurl() : websiteurl;
-		logourl = d.getLogourl() != null && compareTrust(this, e) < 0 ? d.getLogourl() : getLogourl();
-		contactemail = d.getContactemail() != null && compareTrust(this, e) < 0
-			? d.getContactemail()
-			: contactemail;
-		namespaceprefix = d.getNamespaceprefix() != null && compareTrust(this, e) < 0
-			? d.getNamespaceprefix()
-			: namespaceprefix;
-		latitude = d.getLatitude() != null && compareTrust(this, e) < 0 ? d.getLatitude() : latitude;
-		longitude = d.getLongitude() != null && compareTrust(this, e) < 0 ? d.getLongitude() : longitude;
-		dateofvalidation = d.getDateofvalidation() != null && compareTrust(this, e) < 0
-			? d.getDateofvalidation()
-			: dateofvalidation;
-		description = d.getDescription() != null && compareTrust(this, e) < 0 ? d.getDescription() : description;
-		subjects = mergeLists(subjects, d.getSubjects());
-
-		// opendoar specific fields (od*)
-		odnumberofitems = d.getOdnumberofitems() != null && compareTrust(this, e) < 0
-			? d.getOdnumberofitems()
-			: odnumberofitems;
-		odnumberofitemsdate = d.getOdnumberofitemsdate() != null && compareTrust(this, e) < 0
-			? d.getOdnumberofitemsdate()
-			: odnumberofitemsdate;
-		odpolicies = d.getOdpolicies() != null && compareTrust(this, e) < 0 ? d.getOdpolicies() : odpolicies;
-		odlanguages = mergeLists(odlanguages, d.getOdlanguages());
-		odcontenttypes = mergeLists(odcontenttypes, d.getOdcontenttypes());
-		accessinfopackage = mergeLists(accessinfopackage, d.getAccessinfopackage());
-
-		// re3data fields
-		releasestartdate = d.getReleasestartdate() != null && compareTrust(this, e) < 0
-			? d.getReleasestartdate()
-			: releasestartdate;
-		releaseenddate = d.getReleaseenddate() != null && compareTrust(this, e) < 0
-			? d.getReleaseenddate()
-			: releaseenddate;
-		missionstatementurl = d.getMissionstatementurl() != null && compareTrust(this, e) < 0
-			? d.getMissionstatementurl()
-			: missionstatementurl;
-		dataprovider = d.getDataprovider() != null && compareTrust(this, e) < 0
-			? d.getDataprovider()
-			: dataprovider;
-		serviceprovider = d.getServiceprovider() != null && compareTrust(this, e) < 0
-			? d.getServiceprovider()
-			: serviceprovider;
-
-		// {open, restricted or closed}
-		databaseaccesstype = d.getDatabaseaccesstype() != null && compareTrust(this, e) < 0
-			? d.getDatabaseaccesstype()
-			: databaseaccesstype;
-
-		// {open, restricted or closed}
-		datauploadtype = d.getDatauploadtype() != null && compareTrust(this, e) < 0
-			? d.getDatauploadtype()
-			: datauploadtype;
-
-		// {feeRequired, registration, other}
-		databaseaccessrestriction = d.getDatabaseaccessrestriction() != null && compareTrust(this, e) < 0
-			? d.getDatabaseaccessrestriction()
-			: databaseaccessrestriction;
-
-		// {feeRequired, registration, other}
-		datauploadrestriction = d.getDatauploadrestriction() != null && compareTrust(this, e) < 0
-			? d.getDatauploadrestriction()
-			: datauploadrestriction;
-
-		versioning = d.getVersioning() != null && compareTrust(this, e) < 0 ? d.getVersioning() : versioning;
-		versioncontrol = d.getVersioncontrol() != null && compareTrust(this, e) < 0
-			? d.getVersioncontrol()
-			: versioncontrol;
-		citationguidelineurl = d.getCitationguidelineurl() != null && compareTrust(this, e) < 0
-			? d.getCitationguidelineurl()
-			: citationguidelineurl;
-
-		pidsystems = d.getPidsystems() != null && compareTrust(this, e) < 0 ? d.getPidsystems() : pidsystems;
-
-		certificates = d.getCertificates() != null && compareTrust(this, e) < 0
-			? d.getCertificates()
-			: certificates;
-
-		policies = mergeLists(policies, d.getPolicies());
-
-		journal = d.getJournal() != null && compareTrust(this, e) < 0 ? d.getJournal() : journal;
-
-		researchentitytypes = d.getResearchentitytypes() != null && compareTrust(this, e) < 0
-			? d.getResearchentitytypes()
-			: researchentitytypes;
-
-		researchentitytypes = mergeLists(researchentitytypes, d.getResearchentitytypes());;
-
-		providedproducttypes = mergeLists(providedproducttypes, d.getProvidedproducttypes());;
-
-		jurisdiction = d.getJurisdiction() != null && compareTrust(this, e) < 0
-			? d.getJurisdiction()
-			: jurisdiction;
-
-		thematic = d.getThematic() != null && compareTrust(this, e) < 0
-			? d.getThematic()
-			: thematic;
-
-		contentpolicies = mergeLists(contentpolicies, d.getContentpolicies());;
-
-		submissionpolicyurl = d.getSubmissionpolicyurl() != null && compareTrust(this, e) < 0
-			? d.getSubmissionpolicyurl()
-			: submissionpolicyurl;
-		preservationpolicyurl = d.getPreservationpolicyurl() != null && compareTrust(this, e) < 0
-			? d.getPreservationpolicyurl()
-			: preservationpolicyurl;
-		researchproductaccesspolicies = mergeLists(researchproductaccesspolicies, d.getResearchproductaccesspolicies());
-		researchproductmetadataaccesspolicies = mergeLists(researchproductmetadataaccesspolicies, d.getResearchproductmetadataaccesspolicies());
-
-		mergeOAFDataInfo(e);
 	}
 
 }