InfoObjects length in Migration 7.5 to 10.1

Hi experts:

    In  BPC 10.1 the new BPC infoObjects lenght is 32, while in BPC 7.5 was 20. If you make backup /restore enviroment with UJBR, BPC infoObjects are created with 32, but what happends if you doný need to do restore because the migration is in the sames system, only running program 'UJT_MIGRATE_75_TO_101' ?. Doy you know any process to modify this BPC infoobjects lenght from 20 to 32?

Thanks in advance,

Regards,

Abel López