How to migrate from User Profile Disks (UPD) to Roaming Profiles + Folders Redirection?

Question

System administration

I set up UPD on my head. Launched there several users. Of course, it is beautiful and looks ideologically correct, but it causes some inconvenience (for example, exclusive access to the disk).
Tell me how it would be correct to migrate from UPD to Folder Redirection so that the data from the disk is already transferred to the shared folder and nothing is lost along the way.