If you use the OBiTALK configuration facility you MUST have Auto Provisioning in your OBi enabled and you MUST not make any changes locally/manually (or they'll get overwritten by OBiTALK).
If you want to make changes locally/manually, you MUST disable Auto Proviisioning in your OBi and you can no longer use the OBiTALK configuration facility at that point.