hmm not really, i'd say. it is something new with the "same" intention of creation. and it depends on how you approach it, i think. if one bingo square gives you an idea for a fic that will also be posted on another fest, for me it's like you're using two bingo squares for the same fic, the only difference is that you'll post first for the other fest, then for the bingo. the work was made alongside the bingo, so it will count as a new work.

i hope it made sense ASUDHBIASUHO but please ask again if it didn't! (english is also not my first language so if something was confusing, please reach out again!)