When upgrading from 56 to 62 my saved logins and passwords disappeared and copying the files did not help; how can I get them back?

I have just recently moved from Firefox 56 up to 62 (I had a few Legacy add-ons that I didn't want to loose, so I just stopped upgrading at 56; now, I need to upgrade and found a work-around for the main add-ons that I loose in 62). However, once I upgraded to 62, all of my saved log-ins and passwords were gone. I tried copying the files from my saved profile but that did not fix the problem. However, the passwords are still there, as when I downgrade back to 56, all the passwords come back. Is there any way to get these passwords back or do I have to reenter them all manually?