Multiplayer, Metal Rolls lost ...???

I was working with a friend in my game trying to do the rail road tracks contract and when my friend delivered 15 metal rolls into the building site he could not create the tracks, when I went over to do it myself thinking it was just a glitch being my map I had to do it myself the 15 metal rolls were gone, now we have since completed that contract and several others almost done with that map and heading back to do the paper mill contracts and we realized there arent enough metal rolls left in the game to complete the contracts , basically rendering the game and contracts unachievable ..

In the middle of the "Black Badger Lake" map is a factory, where you can craft metall rolls out of metall beams, as far as I remember. And metall beams are (more or less) unlimited.