Hi Ian,

> Is there some way to change the activation code to the current one

have you tried to re-register the machines with the new activation code? From "suse_register --help":
Code:
Example:
                                                                                                                                                                                                                                                                               
 suse_register.pl -n -a email=company@example.com -a regcode-sles=03474hdkndg3934957340
A different way I used with NCC (have not yet tried with SCC) was to move machines to the new subscription NCC(web)-wise.

Regards,
Jens