I'm just not familiar enough with TTX Business. But I would still expect to see an entry in the assets/depreciation section for amortized costs. When working it through, your method of disposition will "not" be that you sold the asset. Otherwise, you'll be forced to enter sales information, and you can't sell a deduction of course. I'm also wondering if that's something that's handled on the personal 1040 tax return passed through on some entry on the K-1. So might want to check that.
wouldn't be best for me to just add a Miscellaneous Expense item under General Expenses of my own making that calls out "Remaining amortization due to mortgage payoff"
I don't see a problem with that. Just make sure you show "some kind" of disposition of the item in the assets/depreciation section that does not involve selling it.
