There is a balance import function in the new contract that will not be locked up immediately. Thus, if Nova opens withdrawals (with deposits locked), these withdrawals can be tracked to their destination address and balances updated periodically. If Nova opens withdrawals in the very near future, I will retake the snapshot. If not, the balance import function is there to handle the Nova situation. If Nova does not open withdrawals in the very long term or states they will not, the Nova balance can be burned; there is a function made to do that as well.
I hope everything is thought out from the point of view of security.
And it will not be possible to load the old tokens several times.