Hello Sam,
Is it possible that your same files are gone deleted every time you upload them? There may be some issue with them or new files are deleted all the time?
No.. Everytime new files are deleted which is in a series..
Eg.
Suppose there are 150 files in my account (Break Up A=50, B=50 and C=50)
1. What happens is in the first Mass Deletion "A" files are deleted and "B" and "C" files are not touched.
2. So I re-upload the deleted files A = D (50).
3. In the second Mass Deletion "B" files are deleted and "C" and "D/A" files are not touched.
4. So I re-upload the deleted files again B = E (50).
5. In the third Mass Deletion "C" files are deleted and "B/E" and "D/A" files are not touched.
6. So I re-upload the deleted files again C = F (50).
7. Now the process starts again, this time with D, E and F files.
The system doesn't looks if the files are new or old or re-uploaded old files.
What it does is, it deletes the files in series after some days (For Me this time was 60days files whereas previous deletions were of 90days files) whether you re-upload or not.
I hope I made you understand with that Maths above.