I suspect the that program doesn't know if that income from a K-1 is from a "Trade or Business" or not, so it assumes it is not.  For example, ProSeries assumes that rental income does not rise to the level of a "Trade or Business" and does not include that.

I'll have to check out the directions that dkh gave.  In the past, I've just done an override on line 11 of the 4562.