Hello Jorge
Sorry for the delay - I didn't see your comment before now. I would say that as those are plans that lay out how the work would be done, I wouldn't (in real life) feel like they needed to go through change control. Unless the change w were making was to change the way config management was done to not do it at all, or something else very drastic and different to the way things were done now. That's my real world take on it. Hopefully we can bounce this to the top of the forum and get some other answers for you!
I have moved your question to the PMP exam discussion forum which might help more people see it.
Also, I saw it posted a couple of times so I have removed the duplicate posts so the responses are consolidated here.