09 up swingarm bearing spacer wear plate

Looking for a little reaffirmation. I'm rebuilding a 09 yz450 and noticed the swingarm does not have the steel oval plates screwed to the inside perimeter of the axel block holes like older models do. These plates on the older models act as a wear buffer between the swingarm and bearing spacer. I noticed they are not on the IPB for the 09 and up models and just wanted to verify that they were indeed eliminated after 08. Any help is greatly appreciated.

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