Terrain Effects RCW'S

[TheGrayMouser]

Hello, was playing TT3_Iberian Valley in RCW. The scenario has objectives across the river in the barbarian village. Problem is there is a river with some shallow water fords but BOTH sides of the banks of the river are marsh hexes. Marsh is impassible to all the Roman units in the scenario except for a few slingers.... Since its a frozen map I was assuming that there were special rules for frozen terrain ie marshes would be passable to heavier troops, but that is not the case. Was/is there a plan to have different terrain effects for frozen maps, TBA? If not, the map should be adjusted so the Romans can actually get to sack those huts for a little R&R :)