Have you tried isolating the layers you want to work on, doing the trim, then restoring the previous layers? Layers can be very powerful when used correctly.
Credit where credit is due! Give kudos or accept as solution whenever you can.
I am very aware of layer isolate. I think it would just save a couple steps to not have to isolate and unisolate almost every time I want to trim something. I am always trying to find a way to save a little time designing.
Access a broad range of knowledge to help get the most out of your products and services.