From fb7998980dc37fa8e513416ddcb40a7d751f956a Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Thu, 10 Dec 2020 13:51:51 +1100
Subject: [PATCH] Fix bug where aggregates were accidentally hidden when
 generating drawings

---
 src/ifcblenderexport/blenderbim/bim/operator.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifcblenderexport/blenderbim/bim/operator.py b/src/ifcblenderexport/blenderbim/bim/operator.py
index 1114f09d3b..613f076a97 100644
--- a/src/ifcblenderexport/blenderbim/bim/operator.py
+++ b/src/ifcblenderexport/blenderbim/bim/operator.py
@@ -2559,7 +2559,7 @@ class CutSection(bpy.types.Operator):
             obj.hide_set(True)
         for obj in bpy.context.visible_objects:
             if (
-                not obj.data
+                (not obj.data and not obj.instance_collection)
                 or isinstance(obj.data, bpy.types.Camera)
                 or "IfcGrid/" in obj.name
                 or "IfcGridAxis/" in obj.name