diff --git a/src/test/java/net/hostsharing/hsadminng/hs/migration/ImportOfficeData.java b/src/test/java/net/hostsharing/hsadminng/hs/migration/ImportOfficeData.java
index ef30add4..64d7e4cb 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/migration/ImportOfficeData.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/migration/ImportOfficeData.java
@@ -693,6 +693,13 @@ public class ImportOfficeData extends CsvDataImport {
 
     }
 
+    @Test
+    @Order(9190)
+    void verifyMembershipsActuallyPersisted() {
+        final var biCount = (Integer) em.createNativeQuery("SELECT count(*) FROM hs_office_membership", Integer.class).getSingleResult();
+        assertThat(biCount).isGreaterThan(isImportingControlledTestData() ? 5 : 300);
+    }
+
     protected void assumeThatWeAreExplicitlyImportingOfficeData() {
         // not throwing AssumptionException
     }