Dim's not editable on drawing, stumped

I'm finally stumped on something.

I did not create this drawing. It was imported from ACAD into SW by a contractor a couple years ago (I was not involved).

Now, I need to edit it. I deleted everything for security purposes except the dimensions I'm trying to edit.

Anyone have any idea how to edit them?

I have tried everything I can think of, I'm stumped.

Thanks.

SolidworksDrawings And Detailing