My mistake. Apologies. You were referring to CBCS...thought you were referring to all_things_comics.
Having said that, we don't know either CGC's or CBCS's exact standards for evaluating trimming in an overall Restored Grade. As some have stated, perhaps their should be a logical threshold/grade cap once the book is determined to be trimmed. I could debate this either way.
Even CGC's past use of the term "Apparent" Grade clouded what exactly the grade was...although I think they now no longer are using that term.
No problem. Too many pronouns without establishing the actual subject left my comment murky to begin with. Misunderstandings happen.
I'm in favor of grade capping trimmed books, but that might lead to more headaches & a lot of confusion for old books that have already gotten a 9.4 or a "greater than X-capped grade". I say 8.0 should be the max it can get & depending on how much trimming or how much of the book is trimmed off in inches, maybe even 6.0 cap, but that's a whole other discussion.