Files from Amazon S3 bucket for uploads moved to tombstone after few days, how to stop

Hi,

Files from Amazon S3 bucket for uploads moved to tombstone after few days, how to stop this?.
Moving files resulting in links in the posts to broke.
It seems this is not discourse, something to do with lifecycle policy of s3 bucket.
I have checked lifecycle policies and I don’t have any such lifecycle policy. Any pointers who encountered this before.

Thank you.