Hi,
I'm having the exact same problem with DNN 4.8.4.
I can see the .page.template files via ftp in the /templates folder under my portal root .
When I try to import a template, there is only the "none specified" option.
With ftp, I can also see a couple of .xml files in the /templates folder. With File manager, I can see only the two .xml files. I have done several "Synchronise file" but with no effect.
Any help on this would be greatly appreciated.