I am well aware of the fact that the trade-in for federal is nonexistent since 2018 but the rules for GAAP have not changed and when using FA Manager you have multiple columns for federal, AMT, ACE, Book, State etc.  The issue is when using the screen if you dispose of the asset through a trade in the answer really is that for federal the trade in is a sale, but for book it is not and you really have to jump through hoops in FA Manager to get it to not report the book as a sale.

The issue is with the FA Manager and how to get both results in one screen which apparently can not be accomplished, so the answer above on inputting the sales price for "book" at the remaining book value should work.  

Tax basis is almost always different than GAAP on this issues.

Thanks for the posts