Render pass pre-multiplied ? How to get rid of pre-multiplication on a render pass

Hey all - I’m relatively new to compositing and more specifically using Unreal for comp passes. I need a world position pass on the shot I’m working on right now, and I’m using the MovieRenderQueue_WorldPos material that comes with the plugin, but it’s pre-multiplied when I bring the pass into Nuke. Any suggestions as to how to get rid of the pre-multiplication on this pass ?