PF "completed" my Lara contract III for me and gave me the 6 Borax wagons at about 14m gravel sent, but I still had to make up the 25,5m gravel for the Kukulkan deco in contract V- so nothing lost or gained. I've nearly finished contract VII for the 160 gems, and, as I don't ever take the competion aspect seriously (not wanting to throw gazillions of speedup Gems away), I haven't suffered any disadvantage (other than having placing Adventurer Lara on hold for a while). Bummer though for the "serious" dispatchers who want their names in lights on the leaderboards (and a medal, flag or a Zeppelin of sorts ... lol). I've however seen several posts regarding materials lost. Hopefully, PF might give 50 or so Gems away to appease disgruntled players, as they have done previously as an apolgy for a glitch.