From 78be8114acc6d53dfe18c940525560e47e019e2f Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Thu, 8 Jun 2023 15:59:49 +1000
Subject: [PATCH] Fix sync bug where unused styles would be purged when
 reloading a blender file.

---
 src/blenderbim/blenderbim/bim/import_ifc.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/blenderbim/blenderbim/bim/import_ifc.py b/src/blenderbim/blenderbim/bim/import_ifc.py
index a9ca216be9..a7213eab5b 100644
--- a/src/blenderbim/blenderbim/bim/import_ifc.py
+++ b/src/blenderbim/blenderbim/bim/import_ifc.py
@@ -1478,6 +1478,7 @@ class IfcImporter:
         if not blender_material:
             name = style.Name or str(style.id())
             blender_material = bpy.data.materials.new(name)
+            blender_material.use_fake_user = True
 
         self.link_element(style, blender_material)