Interior walls and nested instances when pasting a component

[Geo]

Hi Mike,

@Trainman

I have ungrouped all the rivet details but the problems remain.

On the contrary…
Open and expand Outliner.
Nested inside the parent “2 in rivot” Component is another Component, named “Rivet”.

@Trainman

Perhaps because I am using Make vs Pro?

Make and Pro are equally capable of creating SketchUp Solids.
To do so, one must thoroughly understand what makes a solitary Group or Component a SketchUp Solid.

See this post:

Convert Free Make Model to Pro Solids

A Solid in SketchUp is a single Group or Component whose geometry meets certain conditions. When those conditions are met, Entity Info indicates the model is a Solid Group or Solid Component. Also notice Entity Info indicates the Volume of a selected Solid. • The geometry must form a single* airtight vessel. Like a perfect soap bubble … •No gaps •No holes •No leaks • No extraneous Faces** inside or outside the vessel. All Faces must serve to enclose the singular volume of the vessel. • N…

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Create a new rivet Component, giving it hole cutting properties.

Arrange the rivet components on the raw geometry of the wall.
Explode the rivet components.
Select All > Make Component and you’ll have a Solid.

See this copy of the most recent model you shared:
Rivet_Hole Cutting Component.skp (2.0 MB)