Mod Spotlight
Please have a look at the mod spotlight of xterminator about the Train Supply Manager if you want to know how this mod basically works:
https://www.youtube.com/watch?v=8cZzD3pt6r8
Q: my train leaves the loading station empty
The loading station needs to have a normal train stop, not a Cargo Train Manager stop. The workflow is to load the train at the loading station
and then have the train wait at a provider station (which then has to have a Cargo Train Manager stop).