Unable to save to Illustrator 8 legacy format
Illustrator 23.0.1 (64-bit)
Windows 7 Pro SP1 x64
File saved as Illustrator 8 cannot be reopened by Illustrator CC 2019 or earlier versions.
Create simple file (can be blank, but this doesn't show the full problem.
Save as Illustrator 8 format.
Attempt to ope.
Error message (see screenshot) is displayed.
File then opens, but has no content.