Despite the actual game world being saved as it was left when initially shut down, my minefortress data got reset. My entire test play inventory is gone.. besides the blocks i already actually placed/destroyed (Furnaces, Crafting Tables, Chopped Trees..)
This also caused my pawns to pracically multiply from 5 to 10.. so now i have 10 pawns in a save that i already built in.. alongside just the starter items.