I get annoyed at your answers (Quickbooks support) and your fake interest in solving this extremely easy to fix issue on your end that I,and many others, have been asking for for more than 10 years.  The conversion site that I listed above adds one single line tot he qfx file and renamed the file extension.  So your devs can fix this in their sleep. You will never fix it, though, because for some reason it does not help your business in any way.