As you complete the data entry ... if you do not use a 1099 then delete it off the list ... there is no reason to have unused forms in the list to begin with. And the average user only has 10 or less in their list which is very manageable ... if your list goes on for hundreds then you could combine all of the same payers onto one "form line" ... for instance if you have 20 accounts at one bank you could simply make one entry for that bank and enter in just the total. All the separate entries are really more for your benefit since the fed/state only really want/need a total. They also get the 1099 forms so they already know the total thus your return only needs to reflect that total even on the Sch B.
