diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7208f72..4744b29 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Add a service to manage organisation's their scope of operation [OP-3205]
 - datamodel: Allow a location to be within multiple other locations [OP-3205]
 - datafix: set scope of operation for worship administrative units [OP-3626]
+- datafix: cleanup of general memberships if specific ones exist [OP-3640]
 ### Deploy notes
 ```
 drc pull scope-of-operation; drc up -d scope-of-operation
diff --git a/config/migrations/2025/20250718132455-remove-general-memberships-if-specifics-exists.sparql b/config/migrations/2025/20250718132455-remove-general-memberships-if-specifics-exists.sparql
new file mode 100644
index 0000000..ecf8e78
--- /dev/null
+++ b/config/migrations/2025/20250718132455-remove-general-memberships-if-specifics-exists.sparql
@@ -0,0 +1,33 @@
+PREFIX org: <http://www.w3.org/ns/org#>
+PREFIX mu: <http://mu.semte.ch/vocabularies/core/>
+PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
+
+DELETE {
+  GRAPH ?g {
+    ?membership ?p ?o .
+  }
+}
+WHERE {
+  GRAPH ?g {
+    # Find memberships that use the general 'gerelateerd' role
+    ?membership a org:Membership ;
+                org:role <http://data.lblod.info/id/rollen/4ec7d5c39bdc4e84b4174379b9e22ad8> ;
+                org:member ?orgMember ;
+                org:organization ?organization .
+
+    # Only delete if there's a specific role for the inverse membership
+    FILTER EXISTS {
+      ?specific_membership a org:Membership ;
+                           org:member ?organization ;
+                           org:organization ?orgMember ;
+                           org:role ?specificRole .
+
+      VALUES ?specificRole {
+        <http://data.lblod.info/id/rollen/2152eb830b1143bfb97a7dd9596d6c63> # participant
+        <http://data.lblod.info/id/rollen/73d5e1cf250d42fab15926771f07505a> # stichtend lid
+      }
+    }
+
+    ?membership ?p ?o .
+  }
+}