After migration, automatic update messages in former planning elements’ journals are not migrated. Those messages still use planning element references with planning element ids instead of work package ids.

### Reproduction

1. Migrate a dataset with planning element journals containing automatic update messages.
2. Open a former planning element’s journals that contains automatic update messages

### Behavior

**Expected:** Automatic update messages reference work packages

**Actual:** Automatic update messages reference reference planning elements

 Begin of the deletion
End of the deletion