Anybody know why cleaning the two official DLC's causes an instant CTD on load?

Because everything there is there for a reason? I mean, if it isn't broke don't fix it, right?

Yeah, but there are several identical to master edits in these mods. When you delete these edits, something is removed that is required. I was hoping somebody knows the records that are essential, so I could make sure those records remain.

Why would you even wanna do that? There is 0 reason to "clean" any DLCs since you should be loading all mods after the DLCs.

The whole point of "cleaning" is only to remove unnecessary records from mods, so those records don't prevent another mod from overwriting said records. Since DLCs should always be loaded at the top, this serves no purpose in this case.