I am currently migrating one website from another server

Hi! I am currently migrating one website from another server and redesigning everything to new theme. And thanks to WPMU Snapshot plugin! Make things easier to migrate!
My question is - the site still uses Membership Pro and I would like to upgrade Membership 2 Pro without hassle/error. And I tried to delete the Membership 2 Pro here in this site to use the auto upgrade - however it also deletes the Membership Pro.
Let me know the best way to do this ro if you need admin access. Thanks.