Fix town production and acceptance cache saveload/update handling

src/saveload/afterload.cpp

@@ -3093,17 +3093,21 @@ bool AfterLoadGame()
 	 * which is done by StartupEngines(). */
 	if (gcf_res != GLC_ALL_GOOD) StartupEngines();
 
-	if (IsSavegameVersionBefore(SLV_166)) {
+	if (SlXvIsFeatureMissing(XSLFI_TOWN_CARGO_MATRIX)) {
 		/* Update cargo acceptance map of towns. */
+		Town *town;
+		FOR_ALL_TOWNS(town) {
+			town->cargo_accepted.Clear();
+		}
 		for (TileIndex t = 0; t < map_size; t++) {
 			if (!IsTileType(t, MP_HOUSE)) continue;
 			Town::Get(GetTownIndex(t))->cargo_accepted.Add(t);
 		}
 
-		Town *town;
 		FOR_ALL_TOWNS(town) {
 			UpdateTownCargoes(town);
 		}
+		UpdateTownCargoBitmap();
 	}
 
 	/* Set some breakdown-related variables to the correct values. */