diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38c9346..5e2674a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 ## Unreleased
+### Backend
+- Extend the public producer to include NIS codes and more info in representative organs (sites, status) [CLBV-980]
+### Deploy notes
+```
+drc restart delta-producer-publication-graph-maintainer
+```
+
+## v1.31.1 (2025-04-01)
+### Backend
+- Removal of change events of 8 ckb's + update of their status [OP-3562]
+### Deploy Notes
+```
+drc restart migrations-triggering-indexing; drc logs -ft --tail=200 migrations-triggering-indexing
+drc restart migrations; drc logs -ft --tail=200 migrations
+```
 
 ## v1.31.0 (2025-03-27)
 ### Frontend
@@ -12,14 +27,12 @@
 - Set up the dashboard app [OP-3103]
 - Datafix: correct date of change event of kerkfabriek st petrus [OP-3555]
 - Update OCMWv to VVMW [OP-3565] and back. It's technically a nil-operation. But you should run the migrations nevertheless.
-- Extend the public producer to include NIS codes and more info in representative organs (sites, status) [CLBV-980]
 ### Deploy notes
 ```
 drc restart migrations-triggering-indexing
 drc restart migrations; drc logs -ft --tail=200 migrations
 drc pull frontend; drc up -d frontend
 drc up -d mandatarissen-consumer leidinggevenden-consumer worship-services-main-info-consumer worship-services-private-info-consumer
-drc restart delta-producer-publication-graph-maintainer
 ```
 #### For upgrade databases
 [This README](https://github.com/Riadabd/upgrade-virtuoso) provides the necessary steps for upgrading the database. **NOTE**: This will involve shutting down the app for small period of time (around 30 minutes).
diff --git a/config/migrations-triggering-indexing/2025/20250327135401-update-ckb-statuses.sparql b/config/migrations-triggering-indexing/2025/20250327135401-update-ckb-statuses.sparql
new file mode 100644
index 0000000..1ad5864
--- /dev/null
+++ b/config/migrations-triggering-indexing/2025/20250327135401-update-ckb-statuses.sparql
@@ -0,0 +1,42 @@
+PREFIX regorg: <http://www.w3.org/ns/regorg#>
+
+DELETE {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    ?s regorg:orgStatus ?activeStatus.
+  }
+} INSERT {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    ?s regorg:orgStatus ?notActiveStatus.
+  }
+} WHERE {
+  VALUES ?s {
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/ed0914f40dfed83ca44af845a2bf4d81>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/9e0e8f060ca954da6263243642433f44>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/b93ae92a8eb4912125094d98b8b4841d>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/988321712204bd0104fb62e6f5dbe104>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/70e058024a3cd58f76005d645b892e01>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/cf4add06db226861767559753fb50206>
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/5442c1374ed159347bc0c64518a9b1a9>
+  }
+  BIND (<http://lblod.data.gift/concepts/d02c4e12bf88d2fdf5123b07f29c9311> AS ?notActiveStatus)
+  BIND (<http://lblod.data.gift/concepts/63cc561de9188d64ba5840a42ae8f0d6> AS ?activeStatus)
+}
+
+;
+
+DELETE {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    ?s regorg:orgStatus ?notActiveStatus.
+  }
+} INSERT {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    ?s regorg:orgStatus ?activeStatus.
+  }
+} WHERE {
+  VALUES ?s {
+    <http://data.lblod.info/id/centraleBesturenVanDeEredienst/e12c4f9f7167cd0074a97a2f658d1d51>
+
+  }
+  BIND (<http://lblod.data.gift/concepts/d02c4e12bf88d2fdf5123b07f29c9311> AS ?notActiveStatus)
+  BIND (<http://lblod.data.gift/concepts/63cc561de9188d64ba5840a42ae8f0d6> AS ?activeStatus)
+}
diff --git a/config/migrations/2025/20250327135321-delete-change-events.sparql b/config/migrations/2025/20250327135321-delete-change-events.sparql
new file mode 100644
index 0000000..07d1934
--- /dev/null
+++ b/config/migrations/2025/20250327135321-delete-change-events.sparql
@@ -0,0 +1,53 @@
+PREFIX core: <http://mu.semte.ch/vocabularies/core/>
+PREFIX org: <http://www.w3.org/ns/org#>
+PREFIX lblodorg: <http://lblod.data.gift/vocabularies/organisatie/>
+PREFIX euro: <http://data.europa.eu/m8g/>
+PREFIX besluit: <http://data.vlaanderen.be/ns/besluit#>
+
+DELETE {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    ?event ?ep ?eo .
+
+    ?result ?rp ?ro .
+
+    ?decision ?de ?do .
+  }
+}
+WHERE {
+  GRAPH <http://mu.semte.ch/graphs/worship-service> {
+    VALUES ?changeEventUuid {
+      "675AFDCA29299CC832892989" # CKB Beveren
+
+      "675AC8C529299CC83289296D" # CKB De Pinte
+
+      "675AC99229299CC83289296F" # CKB Merelbeke
+
+      "675AB94329299CC83289295D" # CKB Galmaarden
+      "675AD32529299CC83289297B" # CKB Galmaarden
+
+      "675AB98C29299CC83289295F" # CKB Gooik
+      "675AD47629299CC83289297D" # CKB Gooik
+
+      "675AD50229299CC83289297F" # CKB Herne
+      "675AB9D229299CC832892961" # CKB Herne
+
+      "675ACA5F29299CC832892971" # CKB Tessenderlo
+
+      "6774F73E29299CC8328929D3" # CKB Ham
+    }
+
+    ?event a org:ChangeEvent ;
+           core:uuid ?changeEventUuid ;
+           lblodorg:veranderingsgebeurtenisResultaat ?result ;
+           ?ep ?eo .
+
+    ?result a lblodorg:VeranderingsgebeurtenisResultaat ;
+            ?rp ?ro .
+
+    OPTIONAL {
+      ?event euro:hasFormalFramework ?decision .
+      ?decision a besluit:Besluit ;
+                ?de ?do .
+    }
+  }
+}