Description of problem:

The managedserviceaccount component is enabled by default in the MCE and creates an addontemplate called "managed-serviceaccount-x.y". When performing an upgrade of MCE, these addontemplates stay and after a few upgrades, you have something like the below in which you have multiple addontemplates.

$ oc get addontemplate
NAME                          ADDON NAME
gitops-addon                  gitops-addon
managed-serviceaccount-2.10   managed-serviceaccount
managed-serviceaccount-2.11   managed-serviceaccount
managed-serviceaccount-2.9    managed-serviceaccount

The problem is that when you turn off managedserviceaccount, it only deletes the most recent template. For example, disabling managedserviceaccount still leaves the below.

$ oc get addontemplate
NAME                          ADDON NAME
gitops-addon                  gitops-addon
managed-serviceaccount-2.10   managed-serviceaccount
managed-serviceaccount-2.9    managed-serviceaccount

Version-Release number of selected component (if applicable):

"acm_image": "quay.io:443/acm-d/acm-dev-catalog:2.16.0-DOWNSTREAM-2026-02-11-00-13-45",
"mce_image": "quay.io:443/acm-d/mce-dev-catalog:2.11.0-DOWNSTREAM-2026-02-10-23-56-12",

How reproducible:

Always

Steps to Reproduce:

1. Install MCE 2.10
2. Upgrade to MCE 2.11
3. Turn off managedserviceaccount

Actual results:

The old addontemplates remain

Expected results:

All addontemplates should be deleted, ideally after the upgrade is done.