Hi there!
It sounds like you’ve done the process correct as far as importing your historic transactions and linking them to your existing Funraise subscription records via the Subscription ID field.
The recurring sequence appearing as 1/1 and the subscription totals not updating is an unintended side effect of this import process that our team will work on correcting. Once the fix is released, you won’t need to do anything else and you’ll be able to see the corrected sequences and correct totals on the subscription record!