@Scott *********
, that you never have been asked for it in Hua Hin unfortunately doesn't count much as far as what Bangkok immigrations might ask you for.
Seeing as you just moved you have a good chance of being asked for the TM.30 receipt.
If you could I would take the lease, a copy of the land lords thai i/d and their house book listing just in case you are asked about it and then IF you have to file it you can.