Abandoning your settlement and making a nomad caravan (or to settle a new place) will cause every trade you attempt to make with a village futile, as the village will have zero stock and no silver at all. I am guessing the mod somehow multiplies by the settlement wealth somewhere, but thats just a guess. Having a practically empty settlement works fine and seems to give stock based on the caravans wealth. This is very annoying as it forces you to have a settlement, which makes time go slowly when all you want to do is caravan travel.