TRS2006 assets, and routes are stored as hash files in the "Local" folder ... The only way I know of, is to get something from your local folder, to another version, is to save them, in TRS2006, as a CDP.
You also can drag and drop a loco into the TRS2006 CMP Dropdown Picklist, and select: "Add All Dependencies", and save to a CDP ... and import it into a higher version.