I used TRS2006 CMP to clone ATSF C44-9W,<kuid2:113556:2915:1> then opened it for Edit in Explorer. Changed it to a piece of rolling stock by editing the config.txt file as follows:
1. Change the Category-Class to XB
2. Change the enginespec to kuid:-1:42004201
3. Change engine 1 to engine 0
4. Deleted the enginesound and enginehorn lines
5. Deleted the script and class lines
6. Edit the kuid-table to agree with the items deleted.
Save and commit.
Bo