Fix loading of depot unbunch bit from vanilla saves

src/saveload/afterload.cpp

@@ -2160,9 +2160,6 @@ bool AfterLoadGame()
 				order->SetWaitTimetabled(HasBit(order->GetRawFlags(), 3));
 			}
 			OrderDepotActionFlags flags = (OrderDepotActionFlags)(order->GetDepotActionType() >> 1);
-			if (((flags & (1 << 2)) != 0) && !SlXvIsFeatureMissing(XSLFI_DEPOT_UNBUNCHING)) {
-				flags ^= (ODATFB_SELL | ODATFB_UNBUNCH); // Unbunch moved from bit 2 to bit 3
-			}
 			order->SetDepotActionType(flags);
 		}
 	} else if (SlXvIsFeaturePresent(XSLFI_TT_WAIT_IN_DEPOT, 1, 1)) {
@@ -2171,6 +2168,17 @@ bool AfterLoadGame()
 			if (order->IsType(OT_GOTO_DEPOT)) order->SetWaitTimetabled(HasBit(order->GetRawFlags(), 3));
 		}
 	}
+	if (!IsSavegameVersionBefore(SLV_DEPOT_UNBUNCHING)) {
+		/* Move unbunch depot action from bit 2 to bit 3 */
+		for (Order *order : Order::Iterate()) {
+			if (!order->IsType(OT_GOTO_DEPOT)) continue;
+			OrderDepotActionFlags flags = order->GetDepotActionType();
+			if ((flags & ODATFB_SELL) != 0) {
+				flags ^= (ODATFB_SELL | ODATFB_UNBUNCH); // Move unbunch from bit 2 to bit 3 (sell to unbunch)
+				order->SetDepotActionType(flags);
+			}
+		}
+	}
 
 	if (SlXvIsFeaturePresent(XSLFI_JOKERPP, 1, SL_JOKER_1_23)) {
 		for (Order *order : Order::Iterate()) {