Migration and backups

[bsass]

We have a Plesk 9.5.4 server running fully upto date with all MUs installed and I want to know when using the Migration Manger are the current Plesk Backups stored on the server going to be transfered or are they going to be left on the old server? Ideally I am hoping they will be left behind as that will cut down our transfer time migrating from one server to another.

Thanks for the help in advance.