Sketchup model problem applying materials

I’ve imported an interior model of an apartment from Sketchup Make (2017). I used a number of different materials for the surfaces so I would have control applying different materials to different surfaces in TwinMotion and imported as “Collapse by Material”. I’m applying the same cherry wood material to a number of different components. I apply and adjust the rotation so grain direction is correct. My problem is that when I apply to a vertical grained surface, then try to apply to a horizontal grained surface, when I rotate the grain it also rotates on every other cherry surface in the model. I tried duplicating the material in the Materials panel and renaming “cherry” to “cherry2”. No luck. The "Apply to Selection"option hasn’t worked for me either. Not sure if I’m doing that correctly, I’m a little unclear about whether or how to use the Materials Picker.