Ground Advantage. Need Simple Answer

[bill.purvis2012]

Most of my listings ship First Class and I charge a set $4.50.  What do i have to do? Change all my listings to ground Advantage? Will they automatically change? I've read everything I see on this and have no idea what the answers are. 

[mam98031]

It could be since USPS is accepting FC shipments labels through Sept. 30th.  But they will still be processed as Ground Advantage.