Even doing this, still get a 40 MB XComGame.u. Here is a snippet from my .xproj
<None Include="Src\XComGame\Classes\AnalyticsManager.uc" />
<None Include="Src\XComGame\Classes\AnimNotify_ApplyPsiEffectsToTarget.uc" />
<None Include="Src\XComGame\Classes\AnimNotify_BlendIK.uc" />
Any idea how to fix this while still having access to source for code exploration while developing the mod?