You are correct, calibration constants appear to be lost. This is not a big deal, the only caveat is that I don't have a 1ohm 100W resistor. I have the rest in one form or another.
The serial number was also lost. I found your dump of the serial eeprom and it looks like the serial number is stored in the first set of bytes. I have ordered another adapter for my programmer.
I am looking at building a resistor array using some Riedon FPR2A-10RF1 or lower ohm value across a long heat sink. I have found a few enclosures and heat sinks I could mod. I have already done this for another test jig and it turned out fine.