diff --git a/Editor/ReactiveObjects/AnimationGeneration/ReactionRule.cs b/Editor/ReactiveObjects/AnimationGeneration/ReactionRule.cs
index dcf040ea..c705e3d3 100644
--- a/Editor/ReactiveObjects/AnimationGeneration/ReactionRule.cs
+++ b/Editor/ReactiveObjects/AnimationGeneration/ReactionRule.cs
@@ -31,6 +31,8 @@ namespace nadena.dev.modular_avatar.core.editor
 
         public bool InitiallyActive =>
             ((ControllingConditions.Count == 0) || ControllingConditions.All(c => c.InitiallyActive)) ^ Inverted;
+        public bool IsConstantActive =>
+            ((ControllingConditions.Count == 0) || ControllingConditions.All(c => c.IsConstantActive)) ^ Inverted;
         public bool IsDelete;
 
         public bool Inverted;
diff --git a/Editor/ReactiveObjects/AnimationGeneration/ReactiveObjectAnalyzer.cs b/Editor/ReactiveObjects/AnimationGeneration/ReactiveObjectAnalyzer.cs
index 745c5184..86396bf8 100644
--- a/Editor/ReactiveObjects/AnimationGeneration/ReactiveObjectAnalyzer.cs
+++ b/Editor/ReactiveObjects/AnimationGeneration/ReactiveObjectAnalyzer.cs
@@ -287,7 +287,7 @@ namespace nadena.dev.modular_avatar.core.editor
                 }
                 
                 var deletions = info.actionGroups.Where(agk => agk.IsDelete).ToList();
-                if (deletions.Any(d => d.InitiallyActive))
+                if (deletions.Any(d => d.IsConstantActive))
                 {
                     // always deleted
                     shapes.Remove(key);