First of all, I'm using OpenTTD w/ MiniIN.
I have been trying to load some GRF's lately.
Yesterday I started a map and started working on and already finished A LOT of track/stations/signals.
When I started adding trains (yes...probably should've tested it first) I found out that it wasn't showing any NewGRF trains, but just the regular old ones.
I just messed around a bit with some NewGRF's.. put 'cargoset.grf' below 'dbsetxlw.grf' in the priority list ingame, and started a new map where it perfectly gave me a list of newgrf trains of dbsetxl.
But when I loaded the map I had started yesterday, it didn't list the trains of dbsetxl when buying/creating new trains in the depot.
So.. what I was wondering; is there a way to 'reset' all trains or something? As long as it lets me use the newgrf trains without killing all my track

Thanks!