From 4f7829cb6e356bb9fc834da5b0c6efeee4ae71e8 Mon Sep 17 00:00:00 2001
From: Patrick He <patrickhjx@gmail.com>
Date: Wed, 31 Jul 2024 14:35:49 +0200
Subject: [PATCH] Add filter to skip the modifying when the zone of space is
 null (#3525)

Co-authored-by: Jinxuan He <jinxuan.he@rhdhv.com>
Co-authored-by: Dimitrie Stefanescu <didimitrie@gmail.com>
Co-authored-by: Claire Kuang <kuang.claire@gmail.com>
---
 .../ConverterRevitShared/PartialClasses/ConvertZone.cs          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/Converters/ConverterRevit/ConverterRevitShared/PartialClasses/ConvertZone.cs b/Objects/Converters/ConverterRevit/ConverterRevitShared/PartialClasses/ConvertZone.cs
index a0a1e699ca..a12b1f32d3 100644
--- a/Objects/Converters/ConverterRevit/ConverterRevitShared/PartialClasses/ConvertZone.cs
+++ b/Objects/Converters/ConverterRevit/ConverterRevitShared/PartialClasses/ConvertZone.cs
@@ -146,7 +146,7 @@ private DB.Zone CreateRevitZoneIfNeeded(Space speckleSpace, DB.Zone revitZone, P
     {
       revitZone = ConvertZoneToRevit(speckleSpace.zone, out _);
     }
-    else if (revitZone != null && revitZone.Phase.Name != targetPhase.Name)
+    else if (revitZone != null && revitZone.Phase.Name != targetPhase.Name && speckleSpace.zone != null)
     {
       Doc.Delete(revitZone.Id);