I am being told it is not supported.
I was basing decision on this link:
However the new Plesk system supports things differntly and upload is not one fo them. This is the doc that a very patient support person finally found:
The second document clearly shows that upload is no longer supported.
I wish Godaddy would clean up their support documents! I have spent weeks of development migrating a website that can't run on their site because I believed the document I was first given.
If someone know something different please comment!