User blog comment:AK47908/PC Version/@comment-25808182-20140731173108/@comment-25808182-20140919233856

Most mods can be played together. However there is a limit to how many additional levels you can have at once. If you installed the 1.3 patch in the first link, there would be a pop-up saying "Too many missions. ###>=500" on startup if you have gone past that limit. When that happens, remove the mod's folder from Star Wars Battlefront II\GameData\Addon. (The conversion pack's folder is "BF1")