Sudden change of Scavenger Mission difficulty; starting lvl is14 with lvl 11 survivors
I have upgraded my council to lvl 11 a few days ago, but only upgraded the weapons workshop and hospital so far. Prior and post upgrading these buildings, and including; a 1 lvl up finished upgrade of a lvl 12 weapon to lvl 13, I was playing scavenge missions in hard mode, with a starting lvl of 13, but now all of a sudden, it changed to lvl 14. Nothing was changed or upgraded prior to the sudden change. I have not upgraded my survivor training grounds or any of my survivors to lvl 12. I had a lvl 12 weapon upgrading to lvl 14 going on for more than 5 hours and it still has not finished yet, but even during its upgrading, I was still doing starting lvl 13 hard mode scavenge missions.