Imagine you worked years on a Route and put it out as a DLC
people buy that route, you are glad and proud and receive (cough)half of the income
Then someone, starts changing that route in a few weeks and puts it on the DLS , without you knowing
everyone will see and download that new version and play the modified 1 if better
Yes you still would need the original DLC I guess.
For kickstarter =Auran, no problem
If it would happen to me, I guess I would stop developing for Trainz forever.
same thing, that happens in SP4 with freeware DLS items, suddenly become payware
if used in some DLC, if it happened to me I would be FURY-ous.