yes that sounds right just two things you forgot.
before reinstalling photopost you purge the photopost usergroups table
after install you run the userfix script i posted to realign photos to the proper users in
vb based on the changed userid.
what I am saying is their is no guarantee photos and comments would be 100% correct as in what would happen if we encounter users with the same username who is right. We cant discuss how
vb's impex thing works nor if you can assign things right
There is never any guarantee on whether switching or importing things are 100 accurate.
You can purchase an install if you wish us to handle the photopost portion.