allowed parsing of *METADATA_LABEL post introspection

src/pandablocks_ioc/ioc.py

@@ -269,7 +269,6 @@ async def introspect_panda(
 
 
 def extract_label_from_metadata(block_name_number, field_name: str):
-    #
     # Parse *METADATA.LABEL_<block><num> into "<block>" key and
     # "<block><num>:LABEL" value
     if block_name_number.startswith("*METADATA") and field_name.startswith("LABEL_"):
@@ -2101,6 +2100,21 @@ async def update(
 
             for field, value in changes.values.items():
                 field = PandAName(field)
+                field = panda_to_epics_name(field)
+
+                if block_label := extract_label_from_metadata(
+                    *field.split(":", maxsplit=1)
+                ):
+                    no_trailing_number_regex = r"\d*$"
+                    block_label_no_number = (
+                        f"{re.sub(no_trailing_number_regex, '', block_label)}:LABEL"
+                    )
+                    block_label = f"{block_label}:LABEL"
+
+                    if block_label_no_number in all_records:
+                        field = block_label_no_number
+                    elif block_label in all_records:
+                        field = block_label
 
                 if field not in all_records:
                     logging.error(