Due to some old posts has been deleted from time to time. Minimum post of 15 are going to become 20 or more because some bounty manager are counting the total post minus the previous week posts. Though you posted 25 post in one week, sometimes if you are unlucky you will not receive stakes because the total posts are less.
Do you agree that bounty manager team must count only the recent posts in the inclusive days of the week?
The standard check practice by some managers now is to manually count posts from the last update to the present week. Yahoo does this, and I believe other managers do that too.
As long as you have a good and a high quality post, it is very impossible to be deleted,
You are absolutely wrong here. Of what use is a good post if it isn't read because it is buried is some mega threads?
However, to guard against one's posts getting deleted, one has to avoid mega threads or repetitive and redundant threads.