FSLogix Profile migration from forest to forest.

Question

Is there a recommended method to migrate Fslogix profiles cross forest? We are migrating users from an old domain forest to a completely new domain forest using ADMT. Once we migrate a user and log into the new domain, Fslogix wants to create a new profile instead of using their previous profile (which is expected, since its a new SID and all).

When we migrate a physical PC with a physical (non Fslogix) profile using ADMT, the migration succeeds. We tried this with a VM using an FSlogix profile without success. (we think the ADMT tool does something to a local profiles on disk when it converts the PC, but that wouldn't work with FSLogix since the profile no longer exists once the user logs off.)

Environment is a Non-Persistant, Citrix delivered VDI using FSlogix instead of Citrix UPM.