The model is separated into individual groups per material. I tried resetting the position of all the group axes using the axis tools plugin, but I get the same result. Something is not handling the transforms correctly.
This needs an investigation. Could you provide more info about SketchUp connector version? Did this happen in v2 or next gen connector? If possible model could help us to debug if you can share via DM. It doesn’t have to be full model, reproducable amount of it is enough.