Help needed, Raven Core Wallet fund recovery does not work

Hi, newcomer here.

I have a previously created wallet and noted the recovery phrase on paper, put 10 RVN in it. Dumped the privatekey of the only receiving address I had.

I closed Raven Core and deleted wallet.dat.

When restarting Raven Core and typing my recovery phrase, the balance say 0.

Imported backed-up privatekey… balance still show 0.0

What gives ???