My previous session count carried over from the old cram, so it is definitely possible!
I did a lot of cramming before 2.0, so I haven’t had a chance to see whether the old session count carries over towards badge achievement… I would assume so, but you bring up a good point! I hadn’t thought of that.
FWIW, I asked a question in November about how the new cram (doesn’t) integrate stats on crammed items (# correct/incorrect). Session stats seem fine though.