Gains reported on Form 8949? Or...no?

[Michael Healy]

So I'm trying to get a cash out refi and the underwriter wants a IRS Form 8949 for every flip I did last year. Without it they won't count that income as... well... income.

My tax guy says they don't know what they are talking about. Unfortunately that doesn't seem to satisfy the underwriter. 

Any help would be a big help.