Default Quick question about Odin back to Stock

Guys if I modified my Rom AND Kernel (JB AOKP on both) flashing Odin to stock I747UCALG1_I747ATTALG1_I747UCALG1_HOME.tar.md5 puts both the rom AND kernel back to STOCK? Not just the rom right?

Also do you typically return and get a new phone from a reseller, the store you bought it at, or the carrier?