If we would however migrate now, what that would mean for prefixes and albums? Can we preserve it, and add it later, once 1.1.0 with (hopefully prefixes) come out. The thing is, we'd really don't want to wait another couple of months.
The current importer is designed to be run once, importing all data in one operation.
Prefixes and albums aren't supported at the moment so won't be imported.
As it currently stands, it isn't possible to do an import now and then do another partial import later just for prefixes and albums.
That may change but at this point in time, I don't have a definitive answer.