Thanks for your responses....I got it fixed somehow but turning it off and opening AC20 software first instead of opening the file directly. Then I created work environment and then brought in the AC17 file....everything so far has been smooth...and speedy!
LEED AP | cSBA
Interior-Architecture and BIM Management
AC20 USA | 27- macOS 10.14.6| 4 GHz Intel Core i7| 32 GB RAM | Archicad-user since 1994!