High level- you have different views in homebase (ie 1040, 1120, 1120s), one of the views is a query view, you can select different queries and will show a homebase view of just the files that you are searching, you may try to see if there is one that you can use based off of data in that schedule a.  No promises but something that may be worth a shot.  (side note, i know Itemized Deduction is one of the options, not sure what else may apply)