Destructible mesh not showing inside face

I made a model in sketchup, exported it to Blender and then exported it in UE4. Now In UE4 when my destructible falls apart it doesn’t show the faces that were on the inside first. It does work for me on another object for some reason, but not on this mesh for some reason. Please help me.

This is a limitation of PhysX Destructible Meshes.

In order for destruction to work properly the mesh must be a fully enclosed single object.

You can see this post for more detailed information and limitations of the process: Solid objects losing faces during destructible mesh - Asset Creation - Epic Developer Community Forums

Thank you!

Tim