@Pilow said in "ACLs" and "VM creator" options on the VM´s Advanced tab: @panzersrmm I tried to snapshot and revert on a VM with Resource set + ACLs and they did not disappear... ? [image: 1759935440961-b316a971-e2cf-4843-9d05-a96b2299d12a-image.png] @Pilow Yes, yours were kept because you didn't modify them manually. My test case was: Set ACLs + VM creator for a working VM Make a snapshot of this VM Change various VM advanced properties including ACLs + VM creator (simulate evolution of VM) Revert the VM to that snapshot state Check if the set properties were restored: all were restored except ACLs I was wrong about VM creator. That is indeed restored, but ACLs isn't. @olivierlambert Thank you for the explanation. I wasn't trying to judge, just to understand how it actually works.