Ok.... I figured it out and it does download IFF file from ONLY one area within online payroll. You have to get to it only in one path or it won't work...First,...

FIXED: Allow pop up windows in the web browser of choice. If not allowed, no .iif file will export!

ALLOW pop up windows in Safari or other web browser! This was the issue and once allowed for this site, the .iif file downloaded as before! WHOLA!

I got this far before searching online, but the problem still exists. I don't get the menu after applying "export selected paychecks". After hitting the export ...