Hello touraj30 and thank you for reaching out :)
May I please ask what method you used to export from Sketchup?
1) You save has a Sketchup file and imported your .skp file in Twinmotion?
2) You've exported using Datasmith exporter and imported the Datasmith file in Twinmotion?
3) You've used the Direct link option with the Datasmith Exporter and Twinmotion?
In Sketchup how was this object set up? grouped? did you move pivot inside Sketchup?
I would love to test your Sketchup file if you could use the "Contact us" button to report a bug and attach your Sketchup file. We will be able to assist you or get this bug reported to the dev team if needed.
Thank you
MC