Have you tried just a cold migration between hosts? Converter is going to create a new machine on the target, not move the existing machine, that will always create a new uuid. If you cold migrate them at power up you should get prompted for the choice of create, keep, always create or always keep the uuid. I would choose always keep.
Thank for your reply
Yes using migration between hosts (in Virtual Center) is ok, but since I do not have my Vmotion working(no gigabit connection waiting for a new switch ) I cannot use this.
When I trie to use VMotion I get a warning that I do not have FULL 1000 link.
So I think I cannot use this.
PS: But if i power off the VM i can. I have not remenber this
I have used the migration between hosts and all is ok.
I forgot this option, but with the VM power off.