I tried to import your DWG using the Options > Units of Meters...
It imports.
There are issues. because the 9 groups that are created have their origins miles away from their geometry, so the appearance is weird and any orbiting etc is awful - jittery.

You have two choices.

Either make each group in turn into a component using the context-menu, then immediately change its axes to a sensible corner on its geometry [context-menu again]. After doing all 9 it'll be fine.

Or select the 9 groups and use 'Explode' [context-menu again] so their geometry is merged into one context, and their badly located origins are forgotten...

Another possibility would be to remake the forms entirely in SketchUp - its some simple 3d geometry for one [pushpull/offset/move] and an array-copy to make the 9...

WeirdGroupOrigins.PNG

GoodOriginsAfterExplode.PNG