Unable to create new security deployment ECE

We had an issue with our SAML configuration, and the security cluster kept restarting, even after we attempted to update the deployment configuration by removing the SAML block. However, we were unable to bring the cluster back.

As a result, we had no choice but to delete the security cluster.

Now, as we attempt to recreate it, it's still pointing to the old cluster and throwing the following exception.

used the platform security api

I am quite sure you cannot delete the security cluster without wrecking the whole ECE installation since the security cluster is at the root of all authentication in the platform... I would recommend to start a support case about this because I'm quite sure there is no easy fix to this issue.