Need help to understand old MB E-klass 1999 EIS with Motorola key

I did som test here on bench... but find some things that I dont understand

1:I have working EIS and ELV + Key from a car, work perfect on bench!
2: I have a used EIS as made "Renew" by VVDI MB =virgin state

Problem:
I did copy mcu1 and mcu2 from working EIS to my "renew used" EIS.
BUT eis dont work....
I read eis with VVDI MB tool and se that no key is activated and it is not personalized.

So.... Does EIS has a Eeprom,flash etc as handling this info?
(it is not stored in mcu1 or mcu2)

EIS number 2105450008