Insert Sketchup file in Adobe Dimension


I would like to import my sketchup file into adobe dimension. It is not very large (3.15 Mb) but it contains several objects, in particular an object that I took from the warehouse and duplicated 30 times.
When I want to import my file in adobe it doesn’t work or it is very slow.
I think it is because of this object which can be opened into several parts. When I import it alone in dimension, it does not appear as a single entity but we can break it down.
Is there a way to make the sketchup file appear as a single block in dimension?

Looking for a solution,

Thanks for your time,