Sorry, let this slip through my attention span, thanks @Mailaender. We were having troubles getting OpenRA to start in the RA mod as the startup demo was causing crashing problems, and this had fixed the issue. It was completely a quick-fix so we could playtest some changes, and we totally forgot about it. It may or may not still be an issue if the ClientIndex is set back to 0, but as this is important for you, it is worth investigating.