Unless I'm missing something, that solution to convert IIF files to CSV does not work.  As far as I can tell, CSV files have a 3-4 column format that only imports to 1 account in Quickbooks.  How are you supposed to take an IIF file (which has splits across multiple accounts) and use a CSV file to import it?  Please let me know if I'm missing something here, but it seems like this solution does not work at all.

How can Intuit not support it's own file format in QBO?  This is simply unacceptable.