Resolution:
1. Add functionality in editor to allow forceHeadlessClient=1; var in mission.sqm saves instead of stripping var.
2. Merge functionality from Arma2OA beta build 1.63 Beta or later or code functionality to move Dedicated Client to player slot with var forceHeadlessClient=1;
**Filed as Engine bug due to functionality that impacts multiple categories such as Editor, Server, Etc