USCIS does not post status updates for approvals. The status only changes when card production is ordered. Unlike VSC, CSC doesn't really mail out the approval letters way ahead of the Green card. So in most cases, CSC folks only get to know they've been approved when the card is ordered whereas a lot of VSC folks get to know they are approved when they receive an approval latter in the mail. Nonetheless, approvals do not cause status changes. Only card production and card mailing does.
