I want to replace the default 3D transporter with a new 3D transporter I created in the 3D view. Could anyone of you help out with this?
for that just duplicate the transporter in the MUs folder in your Class Library in case you want to keep the original one. Then rename that duplicate if necessary accordingly and right click it and select open in 3D. There you click into the frame that opens up only containing the duplicated transporter. Afterwards you need to select the "Edit" ribbon and there you click on "Exchange Graphics" in the file section in the left corner. Then you only need to import your created 3D model and use this duplicated transporter.