When a user edits and then saves an office document, they become the owner of the file and the previous owner loses their permissions and is denied access. This seems to be caused by the mechanism that creates a temp file and then replaces the original file with the temp file. The temp file is owned by it's creator, so when it replaces the original file the ownership changes.

The scenario is that I have a shared folder. Each user has a spreadsheet in the folder that they need modify permissions on. Users should have no access to each other's folders. A manager needs modify permission on all of the folders. When the user creates a file they become the owner (via Creator\Owner group permissions on the parent folder) and have full control of the file they created. When the manager edits the file, the manager becomes the owner, and the user no longer has access to their file.

Any one have a way around this?