I only just deposited on FT a couple of days ago, since then I've played 6 sessions of rush which I've all of, however my FT account balance is $70.25 more than deposit+bonus+amount won (in PT). Any thoughts on how to work out what happened?

I'm using the mac version if that changes anything.

Do a Manual Import of the hand history files (from the PokerTracker 3\Processed folder). Auto Import shouldn't miss any hands but it's possible with the way Rush works. We have also had reports that some hand histories are not written while playing at Rush tables, though, so the hands might just be missing. You could request the hands from Full Tilt support and import them to PT3.

When playing at Rush tables on Mac you need to leave auto import running for 5 minutes after the last hand history is written (bear in mind that hands continue to play out, and therefore hands to be written) after you sit out of your last hand.

I think this is the problem.

Thanks for the update - you should be able to request those hands from FTP support.