Okay, but you still should have been using the original depreciation asset, right?   Using the original "placed in service" date and the original prior depreciation.  Then it should have just been continuing to depreciate the old asset, and it should be able to be reported as usual.

If that is not how you have it set up, what have you been doing for depreciating?

But as I said before, I think that original $5000 should have been taxed as Unrecaptured Section 1250 Gain.  And I think the only way to manipulate things to factor that in is to manually do things on the "Enterable 4797".