diff --git a/crates/game-service/src/battle_session.rs b/crates/game-service/src/battle_session.rs
index 5929f94..f49b44b 100644
--- a/crates/game-service/src/battle_session.rs
+++ b/crates/game-service/src/battle_session.rs
@@ -60,8 +60,11 @@ impl BattleSession {
     }
     fn opening(&self) -> LogicGameMode {
         let mut mode = self.mode.clone();
-        mode.battle.objects.objects.clear();
-        mode.battle.leaders = Default::default();
+        let leaders = mode.battle.leaders;
+        mode.battle
+            .objects
+            .objects
+            .retain(|entry| leaders.contains(&entry.global_id));
         mode.battle.leader_towers = Default::default();
         mode
     }