Don't you have to give TT the business basis? If so, and if it's proper tax-wise (I think so, but IANAA), just do the basis calculations yourself and plug in the number.
If I were doing this, I'd look up on the IRS website where disposition of business assets gets reported (It ends up on Schedule C but comes from a worksheet, IIRC) on their forms, then go look at those forms in TT and figure out how to get the right data on there. It takes a bit of analysis.
"At times the world can seem an unfriendly and sinister place, but believe us when we say there is much more good in it than bad. All you have to do is look hard enough, and what might seem to be a series of unfortunate events, may in fact be the first steps of a journey." Violet Baudelaire.