"My opinion is the reversal of any modification or damage that occurs after a chip has been retired is acceptable"

How do you know a chip has been retired?
"However once they have been retired after the public notice grace period for redemption the rules change."

The Shoe never ran a redemption notice on any chip they ever used (until Harrahs took over). They just stored them away. Caesars never has ran a redemption notice.

The old casinos very seldom if ever ran redemption notices.

Per records I saw at the FQ's their arodies were never recalled.