I have a smelter that runs with four minecarts to empty fuel and smeltables into the furnaces and sometimes when I open the game and that save, some or all of the minecarts are missing. At first I just replaced them but then after a couple times quitting and reopening the save, the original minecarts will reappear and run along with the replacements. When this happens, I've tried to close and reopen the game, both in and outside of the chunks the minecarts are in but this is not a perfected science and it's really just luck with getting my minecarts back. Please look into this as it is very annoying to have missing minecarts everytime I log in