UVHD

Hello,

I have a question about user profile dics.
Site A has an RDS collection with 2 RDS machines
Site B has 1 RDS machine
I want to move a user from site A
to site B.
This means copying the user profile disc from A to B.
What should I pay attention to, what are the steps I have to take?
Explicitly it concerns, if the user logs in the site B for the first time a new uvhd is created but I would like that he gets the uvhd which I copied

Many Thanks

Bülent