however the OP cannot delete posts as long as the thread is in a section they disallows self moderation.
So it's the nearest explanation why the self moderation feature is disabled or disappeared when the thread move here in meta.
My problem is not here, topic is no longer self-moderation when I brought it back to reputation.
As I explained in my previous post, once you move your threat into a section that does not allow for self-moderation, the self-moderation feature for that thread is removed permanently. It will remain removed even if you move your thread back into a section that allows for self-moderation.