diff --git a/byaldi/colpali.py b/byaldi/colpali.py
index cc11dcb..c233821 100644
--- a/byaldi/colpali.py
+++ b/byaldi/colpali.py
@@ -254,10 +254,29 @@ def _export_index(self):
         embeddings_path.mkdir(exist_ok=True)
         num_embeddings = len(self.indexed_embeddings)
         chunk_size = 500
+        
+        # Save files that are missing and track last modified file
+        last_modif_i = None
+        just_created = []
         for i in range(0, num_embeddings, chunk_size):
-            chunk = self.indexed_embeddings[i : i + chunk_size]
-            torch.save(chunk, embeddings_path / f"embeddings_{i}.pt")
-
+            filepath = embeddings_path / f"embeddings_{i}.pt"
+            # save missing file
+            if not os.path.exists(filepath):
+                chunk = self.indexed_embeddings[i : i + chunk_size]
+                print(f"Saving new file {filepath}")
+                torch.save(chunk, filepath)
+                just_created.append(i)
+            # track last created file
+            elif i not in just_created:
+                last_modif_i = i
+
+        # Save last modified file
+        if last_modif_i is not None:
+            last_chunk = self.indexed_embeddings[last_modif_i : last_modif_i + chunk_size]
+            last_filepath = embeddings_path / f"embeddings_{last_modif_i}.pt"
+            print(f"Saving last modified file {last_filepath}")
+            torch.save(last_chunk, last_filepath)
+        
         # Save index config
         index_config = {
             "model_name": self.model_name,