I have a sumifs function and it works perfectly up until row 400 then it stops calculating and just ignores all the data below row 400. If I specify my sumifs to only do the first 400 rows then add that to another sumifs that does rows 401 to X I get the correct value. Is there some kind of limitation on the number of rows sumifs can use? This is really annoying because I have over 20,000 rows of data that I need to apply this function to. Thanks!
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