Muse Score not converting from PDF to guitar tablature

So I uploaded a PDF file and it was converted to a .mscz file and I can see all of the staff notes. I then try to convert it to guitar tablature, six string common. The tabs show but there are no notes on the tabs themselves. I did Edit, Instruments, Acoustic Guitar (tablature), and then 6-string. I've used simple, full and complete but it doesn't make a difference. I just get the blank tab sheets. What am I doing wrong?