diff --git a/x-pack/plugins/upgrade_assistant/server/lib/reindexing/credential_store.ts b/x-pack/plugins/upgrade_assistant/server/lib/reindexing/credential_store.ts
index 47bb2ade7af1b..b3d4d5e165a13 100644
--- a/x-pack/plugins/upgrade_assistant/server/lib/reindexing/credential_store.ts
+++ b/x-pack/plugins/upgrade_assistant/server/lib/reindexing/credential_store.ts
@@ -17,6 +17,8 @@ export type Credential = Record<string, any>;
 
 // Generates a stable hash for the reindex operation's current state.
 const getHash = (reindexOp: ReindexSavedObject) => {
+  // Remove reindexOptions from the SO attributes as it creates an unstable hash
+  // This needs further investigation, see: https://github.com/elastic/kibana/issues/123752
   const { reindexOptions, ...attributes } = reindexOp.attributes;
   return createHash('sha256')
     .update(stringify({ id: reindexOp.id, ...attributes }))