I expect that the mortgage contract would allow your lender to foreclose based upon the bankruptcy (although obviously that's something you'll have to check). It's also possible that if the money keeps coming in they won't care, particularly in the present housing market. I suggest trying to position yourself to qualify to refinance, just in case.
If your "furniture company credit card" is a store card, that would normally give the store a purchase money security interest (PMSI) in the items you purchased using the card.

