TOPIC: CSV Export

We have had the issue where twice in the past 3 days (that we know of) that when doing a CSV export, it is pulling more than one event that is checked. For example if we have races A, B, C, D, E, & F, when we go to download just A (and only A is checked), it would pull some registrants from race D as well in the CSV Export. Is there anyway to make sure this does not occur as race directors are pulling their files and may not catch this?