A technician is upgrading an option 11C Rls. 5x to a communication server 1000E SA Rls. 7x based on a CPPM CS, COTS SS with 4 chassis media gateway (MG), 100IP sets, 124 digital sets, 30 analog sets and one PR12 DID connection for the incoming and outgoing calls cannot be made from all type of the sets except for the sets in MG3.
When the technician is finished with the upgrade it is noticed during the acceptance testing that outgoing calls cannot be made from all type of the sets except for the sets in mG3. All the sets have dial tone.
Which statement describes what is causing this issue?