Step One: Go to steam\steamapps\workshop\content\32470\mod you want to edit\Data\XML.
In my case I will edit ACM 2.4, the number for that is 1502910879.

Step Two: Open Planets.xml and make edits. (Use what ever editing program you want, I'm using Notepad++)
You want to scroll to end of the planets info you will see something along this line.





If you are here to get rid of the whole mission select it all and delete it. This will allow you to replace the mission, if not the option is just gone.




If you are here to auto succed so you don't have to do the mission repeatedly, then you just remove these select bits.





It should look like this when it's done.




If you want to add a corruption misson to a planet that doesn't have any. Look for the addiontal population, corruption mission come after this.














I had a premade corruption mission to put in. You could just copy and paste one from another planet but, sometimes the Marauders do say the planet name. The one I pasted in will just auto corrupt the planet without any dialog.

Make sure if you are pasting in missions to planets that also have missions to not overlap the corruption slot.







In the second photo I fixed it to say corruption_2_. This won't cause an error with both missions trying to be in the same spot.
Corruption_1_ = Corruption mission 1
Corruption_2_ = Corruption mission 2
Corruption_3_ = Corruption mission 3
Simple enough.

Step 3: Now with the edits made you save it and the launch the game. If you try to corrupt a planet and the mission still plays double check incase you missed it. (I know I missed a couple time to time)

You can obviously edit the requirements the mission needs, rewards, and cost. The should be obvious to understand on it's own.

Needless to say the auto victory for the corruption missions make Zann even more op than they already are, but sometimes I find it most helpful if a mod isn't balanced or the missions are broken that may crash the game. An example would be the Yoden mod.

Hope this guide helped you.