diff --git a/src/connectors/mysql_connector.py b/src/connectors/mysql_connector.py
index d51e3e1..0a9f6af 100644
--- a/src/connectors/mysql_connector.py
+++ b/src/connectors/mysql_connector.py
@@ -275,16 +275,16 @@ class MySQLConnector:
                         if not rows:
                             return
 
-                        # Sort rows by NodeNum within the batch
-                        # (rows already grouped by consolidation key from ORDER BY)
-                        sorted_rows = sorted(rows, key=lambda r: int(r.get("NodeNum") or 0))
+                        # DO NOT re-sort by NodeNum! The database has already ordered by consolidation key,
+                        # and re-sorting breaks the grouping. Rows with same key will not be consecutive anymore.
+                        # We trust the MySQL ORDER BY to keep all rows of same key together.
 
                         # Group rows by consolidation key
-                        # Since rows are already ordered by key, all rows with same key are consecutive
+                        # Since rows are already ordered by key from MySQL ORDER BY, all rows with same key are consecutive
                         current_group = []
                         current_key = None
 
-                        for row in sorted_rows:
+                        for row in rows:
                             key = (
                                 row.get("UnitName"),
                                 row.get("ToolNameID"),