diff --git a/config/migrations/2023/20230824160000-related-organizations/20230831104300-participants.sparql b/config/migrations/2023/20230824160000-related-organizations/20230831104300-participants.sparql
new file mode 100644
index 0000000..c8730be
--- /dev/null
+++ b/config/migrations/2023/20230824160000-related-organizations/20230831104300-participants.sparql
@@ -0,0 +1,28 @@
+PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
+PREFIX org: <http://www.w3.org/ns/org#>
+PREFIX mu: <http://mu.semte.ch/vocabularies/core/>
+
+INSERT {
+  GRAPH ?g {
+    ?membership
+      a org:Membership;
+      mu:uuid ?uuid;
+      org:organization ?organization;
+      org:member ?memberOrganization;
+      org:role <http://data.lblod.info/id/rollen/2152eb830b1143bfb97a7dd9596d6c63>.
+  }
+}
+WHERE {
+    VALUES ?g {
+      <http://mu.semte.ch/graphs/worship-service>
+      <http://mu.semte.ch/graphs/administrative-unit>
+      <http://mu.semte.ch/graphs/shared>
+    }
+
+    GRAPH ?g {
+      ?memberOrganization org:memberOf ?organization.
+    }
+
+  BIND(SHA1(CONCAT(STR(?memberOrganization), STR(?organization), "member of")) as ?uuid)
+  BIND(IRI(CONCAT("http://data.lblod.info/id/lidmaatschap/", ?uuid)) AS ?membership)
+}
\ No newline at end of file
diff --git a/config/migrations/2023/20230824160000-related-organizations/20230831104400-related-members.sparql b/config/migrations/2023/20230824160000-related-organizations/20230831104400-related-members.sparql
new file mode 100644
index 0000000..f9cd3a6
--- /dev/null
+++ b/config/migrations/2023/20230824160000-related-organizations/20230831104400-related-members.sparql
@@ -0,0 +1,35 @@
+PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
+PREFIX org: <http://www.w3.org/ns/org#>
+PREFIX mu: <http://mu.semte.ch/vocabularies/core/>
+
+DELETE {
+  GRAPH ?g {
+    ?organization org:hasSubOrganization ?subOrganization.
+  }
+}
+INSERT {
+  GRAPH ?g {
+    ?subOrganization org:memberOf ?organization.
+
+    ?membership
+      a org:Membership;
+      mu:uuid ?uuid;
+      org:organization ?organization;
+      org:member ?subOrganization;
+      org:role <http://data.lblod.info/id/rollen/4ec7d5c39bdc4e84b4174379b9e22ad8>.
+  }
+}
+WHERE {
+    VALUES ?g {
+      <http://mu.semte.ch/graphs/worship-service>
+      <http://mu.semte.ch/graphs/administrative-unit>
+      <http://mu.semte.ch/graphs/shared>
+    }
+
+    GRAPH ?g {
+      ?organization org:hasSubOrganization ?subOrganization.
+    }
+
+  BIND(SHA1(CONCAT(STR(?organization), STR(?subOrganization), "sub organization")) as ?uuid)
+  BIND(IRI(CONCAT("http://data.lblod.info/id/lidmaatschap/", ?uuid)) AS ?membership)
+}
\ No newline at end of file
diff --git a/config/resources/domain.json b/config/resources/domain.json
index 278af59..3b529ca 100644
--- a/config/resources/domain.json
+++ b/config/resources/domain.json
@@ -445,23 +445,12 @@
           "target": "organizations",
           "cardinality": "many"
         },
-        "sub-organizations": {
-          "predicate": "org:hasSubOrganization",
-          "target": "organizations",
-          "cardinality": "many"
-        },
         "is-associated-with": {
           "predicate": "org:linkedTo",
           "target": "organizations",
           "cardinality": "one",
           "inverse": true
         },
-        "is-sub-organization-of": {
-          "predicate": "org:hasSubOrganization",
-          "target": "organizations",
-          "cardinality": "one",
-          "inverse": true
-        },
         "memberships-of-organizations": {
           "predicate": "org:member",
           "target": "memberships",
@@ -474,11 +463,6 @@
           "cardinality": "many",
           "inverse": true
         },
-        "is-member-of": {
-          "predicate": "org:memberOf",
-          "target": "organizations",
-          "cardinality": "many"
-        },
         "sector": {
           "predicate": "dc_terms:isPartOf",
           "target": "sectors",