Update from r135:
"Selecting objects in the Project Bar with no instances in the current Layout View no longer selects instances from across the whole project (avoids unexpected results changing properties in this case)".
I'm talking about a workaround of this update. I know I can set default values to various objects...but lets say I have 100 layouts and suddenly need to change the values of all of them (read different defaults of Family vars between separate family objects - The torch has 5 strength of light(family var) while the lamp has only three.
Cheers