I too am having the same problem where QBO won't recognize the CSV files I'm trying to import. I started using the CSV file method with Charles Schwab stopped talking to QBO but doesn't give any error messages, so no one can tell me what to do there. Now my back up plan doesn't work either with CSV files not being uploaded. I have 16 accounts across multiple clients that require some kind of upload to work - does anyone have a solution besides clearing cache, reformatting, or saving/re-saving as different file types? None of those options are working for me.