Supply wagons disappearing

[binx12]

All my supply wagons are gone.  I just transported them ti province 1, and now I don't have any supply wagons.  Where did they go?

[tres]

i have problem bigger, my wagons disappeared at transporting 13m stones
wtf...

[-qc-stones]

thanks for the stone I received it

no sometimes we just dont saw the icon on the rigth side, but you just have to open the depot station and clic on transport mission. You will saw them over there.