This may involve two different forms, but here it goes. We have a newly installed Windows Server 2012 R2 Standard with Active directory, DNS and DHCP. In addition we have several newly installed Windows 10 workstations. The workstations have local user accounts (not Microsoft accounts) like Blah1, Blah2, Blah3 etc. and the local administrator account. We do all of our setup, app loading and configuration as the local administrator. Prior to bringing the workstations into the domain we log in to the workstation as Blah1, which is an administrator level account, and copy the actual Administrator Profile to the Default profile so that every new user starts with the same basic desktop at first login. Once the Default profile is set we log back in as the local administrator of the workstation and then join the domain. All good at this point. I can now log in as a domain user (XXXX23.domain.xxx) for that workstation and I get the administrator desktop and settings and the group policy is pushed from the server. That user can then customize the desktop however they wish. Still all good.
The problem is that, unlike previous OS's, with Windows 10, once we join that PC to the domain all of the local users for that PC disappear. So If I now try to login locally as "workstation name\ local user1" that user no longer exists. Even If I remove that PC from the domain, none of the local users I created prior to joining the domain are there anymore, not even the Blah1 administrator level user I logged in as to copy the administrator profile just prior to joining the domain. Only the local PC Administrator user is present. In Windows 8 and prior there were the local users, and the domain users. The local users would be maintained in the Control Panel\User accounts regardless of what server active directory I was connecting to. In Windows 10 all the pre-domain local users are lost.
Is there a setting I am missing to retain this information?