Hello ,
Thank you for posting in the community and to best work on a different computer you will need to run the resource collector and send the maps folder and the TM file to the other machine. Please take a look at this article: https://twinmotionhelp.epicgames.com/s/article/How-to-share-files-including-textures-by-using-the-Resource-collector
Kind regards,
Vincent B.