FolloME outbound route

Follow me in 4.2 is a bridge statement and its set at the time that the follow me is configured. If you change the outbound route it does not update the any follow me and you will have to manually disable and re-enable every follow me. Same problem likely for call forward. 4.2 is 3 years old and is considered end of life so there is no plan to fix your issue on 4.2.