Separate AD and AAD users

Hi There,

Can I separate AD and AAD (merged) users?

We have an AD and AAD and there is an PSH sync between the systems!7

I would like separate some synced users, I moved this users in an OU (which isnt selected to the sync), then the AAD put this users in the "deleted users" group, I restore these users, BUT with the next sync the AAD move these users back to the deleted users group. 

I have already tried ti change these users GUID in AAD, but nothing change. 

Is there any solution for this problem?