diff --git a/src/main/java/eu/mihosoft/vrl/v3d/CSG.java b/src/main/java/eu/mihosoft/vrl/v3d/CSG.java
index 37504bb7..a13f7a16 100644
--- a/src/main/java/eu/mihosoft/vrl/v3d/CSG.java
+++ b/src/main/java/eu/mihosoft/vrl/v3d/CSG.java
@@ -3154,6 +3154,7 @@ public boolean isHole() {
 
 	public CSG syncProperties(CSG dying) {
 		getStorage().syncProperties(dying.getStorage());
+		regenerate=dying.regenerate;
 		return this;
 	}