Hello everyone,
So I've discovered an old Bitcoin QT wallet and followed the steps in this video (https://www.youtube.com/watch?v=a08MlPSSULU).

Basically the steps were to replace the old wallet.dat with my backup .dat and use CMD rescan.

I'm still downloading the Blockchain (which is going to take ages). My question is, should available Bitcoins be updated straight away launching QT (before the blockchain finishes downloading)?

Currently the total is 0.0000000BTC available. What's interesting is that I can already see all the transactions and comparing in/out it looks like I should have some BTC left over. Do I just have to let the entire blockchain download before available BTC is refreshed?