it means you will not be using the visit visa anymore but the residence visa when you pay for it. Make sure pay QR500 for the transfer, otherwise your wife's record is still under the visit visa.

Transfer visa from visit to residence will be done in few minutes, then do the necessary, medical and finger printing. If she has extended visit visa and had medical she will not repeat but have to pay again QR100 for the residence visa.

Verify everything with Immigration to make sure you will avoid penalties.