Any SC or points earned during the suspended timeframe were credited to the old account.
Along with the balance transfer to the new VFF account number, all historical transactions are listed. I can see
Whilst I imagine if anything is missing it would be a painful challenge to recover, I assume it will be possible. Once my migration was complete, the old account was deactivated once again.
Travel Credits, if exist, remain tied to the old account details. Apparently, you can use them at checkout when booking. Future travel credits will flow to the new VFF account. I'll verify when I get a chance to book.
It is on you though to update to your new VFF account any non-linked earns. AMEX, Virgin Money, Virgin Wines etc I had to change myself through respective portals.