diff --git a/src/bonsai/bonsai/tool/drawing.py b/src/bonsai/bonsai/tool/drawing.py
index 90f0805975..aefd3d2c9c 100644
--- a/src/bonsai/bonsai/tool/drawing.py
+++ b/src/bonsai/bonsai/tool/drawing.py
@@ -493,8 +493,11 @@ class Drawing(bonsai.core.tool.Drawing):
 
     @classmethod
     def ensure_unique_identification(cls, identification: str) -> str:
-        attr = "DocumentId" if tool.Ifc.get_schema() == "IFC2X3" else "Identification"
-        ids = [getattr(d, attr) for d in tool.Ifc.get().by_type("IfcDocumentInformation") if d.Scope == "SHEET"]
+        ids = [
+            cls.get_sheet_identification(d)
+            for d in tool.Ifc.get().by_type("IfcDocumentInformation")
+            if d.Scope == "SHEET"
+        ]
         while identification in ids:
             identification += "-X"
         return identification
@@ -985,6 +988,12 @@ class Drawing(bonsai.core.tool.Drawing):
             else:
                 new.identification = schedule.Identification
 
+    @classmethod
+    def get_sheet_identification(cls, sheet: ifcopenshell.entity_instance) -> str:
+        """Schema agnostic method to get IfcDocumentInformation.Identification."""
+        attr = "DocumentId" if sheet.file.schema == "IFC2X3" else "Identification"
+        return getattr(sheet, attr)
+
     @classmethod
     def import_sheets(cls) -> None:
         props = cls.get_document_props()
@@ -994,7 +1003,7 @@ class Drawing(bonsai.core.tool.Drawing):
         cls.sheet_selected_states.update({s.ifc_definition_id: s.is_selected for s in props.sheets if s.is_sheet})
         props.sheets.clear()
         sheets = [d for d in tool.Ifc.get().by_type("IfcDocumentInformation") if d.Scope == "SHEET"]
-        for sheet in sorted(sheets, key=lambda s: getattr(s, "Identification", getattr(s, "DocumentId", None))):
+        for sheet in sorted(sheets, key=lambda s: cls.get_sheet_identification(s)):
             new = props.sheets.add()
             new.ifc_definition_id = sheet.id()
             if tool.Ifc.get_schema() == "IFC2X3":
diff --git a/src/bonsai/bonsai/tool/web.py b/src/bonsai/bonsai/tool/web.py
index ec9437d4eb..c89ca76eae 100644
--- a/src/bonsai/bonsai/tool/web.py
+++ b/src/bonsai/bonsai/tool/web.py
@@ -741,7 +741,7 @@ class Web(bonsai.core.tool.Web):
             ifc_file_dir = os.path.dirname(props.ifc_file)
 
             sheets = [d for d in tool.Ifc.get().by_type("IfcDocumentInformation") if d.Scope == "SHEET"]
-            for sheet in sorted(sheets, key=lambda s: getattr(s, "Identification", getattr(s, "DocumentId", None))):
+            for sheet in sorted(sheets, key=lambda s: tool.Drawing.get_sheet_identification(s)):
                 for reference in tool.Drawing.get_document_references(sheet):
                     reference_description = tool.Drawing.get_reference_description(reference)
                     if reference_description != "SHEET":