Reverted back to mission file in each addon. Explanation below:
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Some people were asking to fix the "Conflicting Addon" popup (where each addon shows up RED as conflicting from menu settings). There was never any "conflict" or problem. The reason this happens is because each separate addon has the same missions file in it. This lets the game know that all these addons work together for the same campaign and are meant for that campaign only. Since "fixing" that issue that people asked for - they show up fine and white in color with no conflict message - however, now anything custom added to the campaign also seems to be showing up in the main game (machete for example, since it's a custom model but the skin used can't fit the machete in game since it's not the same model). The ONLY fix for this is to bring back the missions file in each VPK - and it will show "conflicting" but there IS NO ISSUE. This is a VALVE problem as far as I know.

Fixed conflicting errors showing in game addons