diff --git a/lightrag/lightrag.py b/lightrag/lightrag.py
index 1c3bd089..8513ac19 100644
--- a/lightrag/lightrag.py
+++ b/lightrag/lightrag.py
@@ -862,13 +862,15 @@ class LightRAG:
             for chunk_data in custom_kg.get("chunks", {}):
                 chunk_content = chunk_data["content"].strip()
                 source_id = chunk_data["source_id"]
+                tokens = len(encode_string_by_tiktoken(chunk_content, model_name=self.tiktoken_model_name))
+                chunk_order_index = 0 if "chunk_order_index" not in chunk_data.keys() else chunk_data["chunk_order_index"]
                 chunk_id = compute_mdhash_id(chunk_content, prefix="chunk-")
 
                 chunk_entry = {
                     "content": chunk_content,
                     "source_id": source_id,
-                    "tokens": len(encode_string_by_tiktoken(chunk_content)),
-                    "chunk_order_id": 0,
+                    "tokens": tokens,
+                    "chunk_order_index": chunk_order_index,
                     "full_doc_id": source_id,
                     "status": DocStatus.PROCESSED,
                 }