As I usually say in a first reply, I always ask for a BLS-2015 version number (27.0#.##) just in case there's an issue with a particular version update that can be or may have already been addressed.
BLS will insert that full amount, and that's because of what the form asks for, and the item description reads "Estimated total league funds NOT INCLUDING lineage fees". And under the dollar amount, in italics it reads "Prize money, salaries, expenses, etc., (if none enter zero)"
So, that's all funds after the center is paid for lineage. It's not just the cash prize fund but all others. USBC bonds the league for the entire amount, not just the prize fund as you wish it to be. So that's why BLS includes the whole amount.
Always check, download, and install the most recent update of your software to ensure that issues may have been corrected.