Illustrator :: OS X 10.8 Saving Opened / Edited CS5.5 And CS6 File Rewrites File Permissions

Open an .AI file saved on a netapp or windows shared directory with full permissions (prior to saving I noted that all security groups are intact in file properties as we have 2 for read and write access)Make any changesTry to save and get the prompt:  Can’t save preview, but all other information was saved successfully. The file couldn’t be found. ID = -43  (file is now corrupted and looking in security group file properties the 2 security groups designated for read and write access for the directory is now gone and shows an unknown security group????)

Save as works without a problem. Try to press save again and get This file has been modified outside Illustrator. Do you want to continue?Continue and prompted This file cannot be foundObviously the file preview icon goes from a thumbnail of the file to a generic iconWhen I try to open the file I get: Can’t open the illustration. The file is locked or in use.It led me to believe the issue was either OS X or CS5.5. I was able to open the file fine on Windows Illustrator CS5.5 make a slight change and resaved (which fixed the file and opens again in OS X and read/write security groups show up again?)Optionally, I was also able to fix the file to where I could open it in OS X by simply giving myself Read/Write access to the file from Get Info 

Notes:No issues with the same file in 10.7.x.

I've tested on all available Mac Pro / MacBook Pro machines and issue doesn't seem to happen on MacBook Pro retina?Photoshop and InDesign not affected