These cases have to be treated on a case by case basis, since there are different matters that need to be taken into account, such as billing issues, address space usage, routing, new service agreement, etc.
These are examples of different scenarios:
In these three cases, please read http://www.ripe.net/ripe/docs/mergers before contacting [email protected] for assistance.
In this case, please contact [email protected] in order to discuss your specific case.
Note: Although your company name may change, you are not required to change your Reg-ID, as this is only a unique identifier within the RIPE NCC.