Ben London,
I’ve been having the same issue since 6.7.4. Please check if your S3 bucket names or subdirectory names have a space in the name. After testing all morning, I’ve narrowed it down to this in my case:
If a bucket has a space in the name OR if a subdirectory within a bucket has a space in the name and you try to add a NEW file, the file is removed along with any existing files that were from that same bucket/directory. Be careful not to update packages for now where the files come from buckets/directories with spaces in the names or it will remove all of the files that came from that bucket/directory (I found out the hard way) .
If you add a file from a bucket that has no spaces in the name, then the files attach and stay attached successfully. I have another ticket open about this and I updated support in that ticket so that hopefully they can fix the issue on their end. We shouldn’t have to rename our buckets or subdirectories since the issue started with version 6.7.4 AND doing so would break most or all of our download links. I hope this information is helpful.
