17 votes16 comments · Illustrator Bugs » File Save, Import and Export · Flag idea as inappropriate… · Admin →
Resource Fork in .ai files are removed in version 22.1. This is done to prevent an intermittent crash while saving Illustrator files to smb volume on macOS 10.13. Apple deprecated resource fork many years ago.
Following Apple document talks about deprecations that lead to removal of Resource From .ai files
An error occurred while saving the commentMark B. commented
Boooo to Adobe for removing this useful information! We send 99% of our files to overseas vendors. This information was our best and easiest way to double check the file was saved in the correct version. Once again, Adobe has failed is customers.