You can new create new BCF projects from scratch

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -25,6 +25,7 @@ if bpy is not None:
         operator.UnassignClass,
         operator.SelectClass,
         operator.SelectType,
+        operator.NewBcfProject,
         operator.LoadBcfProject,
         operator.SaveBcfProject,
         operator.AddBcfTopic,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -507,6 +507,24 @@ class RejectElement(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class NewBcfProject(bpy.types.Operator):
+    bl_idname = "bim.new_bcf_project"
+    bl_label = "New BCF Project"
+
+    def execute(self, context):
+        import bcfplugin
+        bcfplugin.newProject("New BCF Project")
+        bcf.BcfStore.topics = bcfplugin.getTopics()
+        bpy.context.scene.BCFProperties.is_editable = False
+        bpy.context.scene.BCFProperties.name = bcfplugin.getProjectName()
+        while len(bpy.context.scene.BCFProperties.topics) > 0:
+            bpy.context.scene.BCFProperties.topics.remove(0)
+        bpy.context.scene.BCFProperties.is_editable = True
+        bpy.context.scene.BCFProperties.directory = bcfplugin.util.getBcfDir()
+        bpy.context.scene.BCFProperties.is_loaded = True
+        return {"FINISHED"}
+
+
 class LoadBcfProject(bpy.types.Operator):
     bl_idname = "bim.load_bcf_project"
     bl_label = "Load BCF Project"
@@ -525,6 +543,7 @@ class LoadBcfProject(bpy.types.Operator):
             new = bpy.context.scene.BCFProperties.topics.add()
             new.name = topic[0]
         bpy.context.scene.BCFProperties.is_editable = True
+        bpy.context.scene.BCFProperties.is_loaded = True
         return {"FINISHED"}
 
     def invoke(self, context, event):

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -1640,6 +1640,7 @@ class BIMProperties(PropertyGroup):
 
 class BCFProperties(PropertyGroup):
     is_editable: BoolProperty(name="Is Editable", default=False)
+    is_loaded: BoolProperty(name="Is Loaded", default=False)
     name: StringProperty(default="", name="Project Name", update=updateBcfProjectName)
     author: StringProperty(default="john@doe.com", name="Author Email")
     topics: CollectionProperty(name="BCF Topics", type=BcfTopic)

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1661,12 +1661,13 @@ class BIM_PT_bcf(Panel):
         props = bpy.context.scene.BCFProperties
 
         row = layout.row(align=True)
-        row.operator("bim.load_bcf_project")
+        row.operator("bim.new_bcf_project", text="New Project")
+        row.operator("bim.load_bcf_project", text="Load Project")
 
-        if not props.topics:
+        if not props.is_loaded:
             return
 
-        row.operator("bim.save_bcf_project")
+        row.operator("bim.save_bcf_project", text="Save Project")
 
         row = layout.row()
         row.prop(props, "name")
@@ -1674,15 +1675,15 @@ class BIM_PT_bcf(Panel):
         row = layout.row()
         row.prop(props, "author")
 
-        if not props.topics:
-            return
-
         props = bpy.context.scene.BCFProperties
         row = layout.row()
         row.template_list("BIM_UL_topics", "", props, "topics", props, "active_topic_index")
         col = row.column(align=True)
         col.operator("bim.add_bcf_topic", icon="ADD", text="")
 
+        if not props.topics:
+            return
+
         row = layout.row()
         row.prop(props, "topic_description", text="")