Can you verify that your blocks are indeed stored in this directory?
C:\\Users\\Owner\\AppData\\Roaming\\Bitcoin\\blocks
It would appear so, but the date of 2017 has me confused as I have sync'd Armory since then and move coins in/out?
https://imgur.com/a/NzaEzsLBlock folder is 302GB, with numerous block files.
Just to be 100% sure, when you run Bitcoin Core, what value is displayed as your "blocksdir" when you open "Window - Information"?
If that says C:\Users\Owner\AppData\Roaming\Bitcoin\blocks then that setting is just fine...
It's quite possible, that running the older version has resulted in some incompatibilities in the Armory database(s)... You can try the "Rebuild and Rescan Databases" option from the Help menu in Armory and then restart.