How to report a bug? Issue with 1031 exchange (Form 8824)

I am having an issue filling out the 1031 form (8824). I sold farm land and purchased another farm. When I fill out the form, everything is calculated correctly but when I get to line 25, it only gives me the choice to put a basis for section 1250, 1245, or intangible property. It is my understanding that bare land is none of those choices, it should be section 1231 property. It is forcing me to put a value into one of the other choices for me to continue. Is there a work around for this? I tried calling the help desk but they didn't have one. I wasn't able to manually over-ride it either. I think it is a bug to require one of those choices to be filled out. It says in the description, IF it is 1250, 1245, or intangible property enter the values. Well, it is none of those choices so I shouldn't be required to put in a value.