Clash Detection - Rules

[jesseHLKB5]

I am looking to eliminate clashes that are caused by duct, pipe, and conduit penetrating through walls. I am aware of the "Items in Previously Found Pair of Composite Objects" that seems to be available in previous versions of Navisworks; however, it is not available in 2018. Is there a rule, or a manipulation of a rule that would allow for these clashes to be removed from the results?

Thanks

[craigjonnson · Accepted solution]

Hi, have you considered searchsets? This works for me, basically searching for walls that are concrete, in-situ material within the Architectural and Structural files. The clash results only report out the walls where penetrations are then required. 

[Anonymous]

Indeed! Why would they get rid of that rule?