I thought that it is a protected area and can not be erased? I have several of the same number where they have been erased on a different programmer.
It can be read only when you disable the ID check in options.
However, it errors out if you try to program--"Manufacturer ID does not match"

Using 48pro2 with matching socket adapters;
Catalyst: CAT28F512
Micronix: MX25L1606
Thanks
Ray_A