I can only recall a few chips where casino ownership changed and the new owners kept the old chips but crossed off the old owners name from the chips. One is the issue from Binion's Horseshoe when Benny went to jail. Another are the CJ-JK chips from the Holiday Inn Aruba. Well here is a third one, from the Casablanca casino in Aruba. Was a Wyndham and is now a Westin.

Original chip - under Wyndham Ownership

Modified chip - now under Westin Ownership

This is not a hot stamped chip, there is a white inlay with blue lettering on it. It looks like the Wyndham name and logo were removed with some kind of acid, it was definitely not scratched off like the Binion's and Holiday Inn chips.