Trying to enable backup mode in ops manager local - version 8.0.7-b20250714T000000Z

I have Ops-Manager 1.33.0 deployed in local mode, backups enabled: false. I am trying to re-deploy ops manager local mode but with backups enabled: true.

However the deployment fails:

NAME REPLICAS VERSION STATE (OPSMANAGER) STATE (APPDB) STATE (BACKUP) AGE WARNINGS
ops-manager-localmode 1 8.0.7-b20250714T000000Z Failed Running Disabled 69m

Ops Manager:
Last Transition: 2025-08-06T16:34:04Z
Message: Can’t execute update on forbidden fields
Observed Generation: 2
Phase: Failed
Replicas: 1
URL: http://ops-manager-localmode-svc.mongodb.svc.cluster.local:8080
Version: 8.0.7-b20250714T000000Z
Events:

This has always worked in the past when deploying ops manager 7.0.9 and earlier