Rename SEPM Group with the same change on clients

Dears;

Hi

We have a problem for changing the name of our SEPM groups.

We had a movement and during it, our Bld. name and department has been changed.

Now, I want to rename current group to new one, so in first step I have do it with a test group.

Renamed it and update client, I saw that client group didn’t change to new one and after some times moved to Default Group.

Is there any solution to solve this issue and correct our group names without create new Groups/Policies and move clients to them ?

thanks for your assist.

BR;

Sara