Migrating Roaming Profiles to new server

I'm seeking best practices in migrating roaming profiles to a new server.  I wish to migrate profiles to a new server (CIFS to DFS) and see other posts suggesting to first Robocopy the profiles to the new server and then change the profile path in Active Directory.

My questions:

1) Instead of Robocopy, can I just change the profile path to the new server?  Will the computer that the user has been using simply copy its local profile to the new share?   Or does the computer - seeing there is no profile in the new server - start creating a new profile which in turn causes the user to lose their data/settings?

2) If Robocopy is the preferred method, does it copy over the folders that only the user has access to (I believe this is known as Creator)?   In other words, even as a domain admin I can't access the user's folders (unless I take ownership) and I'm worried that Robocopy may experience the same issues.

Proposed command:

robocopy.exe \\OldLocation\Users \\NewLocationUsers /MIR /COPY:DATSO /W:0 /R:1 /V /LOG:D\users_copy.log

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