I am getting to know RTW better and am thinking about getting the BI expansion. What I'm wondering is, does the expansion have any form of copy protection? I know RTW has the SafeDisc. Since Sega took over CA, will it have the Steam protection, another SafeDisc, or something else?

Also, I already have the patch 1.3 installed on my copy of RTW. Will the expansion overwrite the patch; need a clean, unpatched install of RTW; or will it detect the patch and not need to install it?