Neither program wants your QIF
Quicken imports QIF only into asset, liability and cash accounts. Checking, savings, credit card, 401(k) and brokerage accounts are excluded, and it is so for many years already. QuickBooks is blunter about it: there is no QIF import there at all. So the archive you exported sits between two programs that both decline it, and it stays there until somebody turns it into the format the importer reads. That conversion is the whole job of QIF to QBO Converter.