Hello @dans73382883,
We understand how frustrating it can be to not have your settings migrated when installing Illustrator. Would you mind trying to copy the Workspaces folder manually from the following locations and paste it to the exact location on your current version of Illustrator installed on your device and checking if it helps?
macOS:
- ~/Library/Preferences/Adobe Illustrator <version> Settings/en_GB/Workspaces
- ~/Library/Preferences/Adobe Illustrator <version> Settings/en_GB/Modified Workspaces
Windows 10:
- C:\Users\<your username>\AppData\Roaming\Adobe\Adobe Illustrator <version> Settings\en_US\x64\Workspaces
- C:\Users\<your username>\AppData\Roaming\Adobe\Adobe Illustrator <version> Settings\en_US\x64\Modified Workspaces
Looking forward to hearing from you.
Thanks,
Anubhav