Update condition

Co-authored-by: Fokko Driesprong <fokko@apache.org>

Author: lliangyu-lin

pyiceberg/table/update/snapshot.py

@@ -405,7 +405,8 @@ def _compute_deletes(self) -> Tuple[List[ManifestFile], List[ManifestEntry], boo
         def _copy_with_new_status(entry: ManifestEntry, status: ManifestEntryStatus) -> ManifestEntry:
             return ManifestEntry.from_args(
                 status=status,
-                snapshot_id=self.snapshot_id if status != ManifestEntryStatus.EXISTING else entry.snapshot_id,
+                # When a file is replaced or deleted from the dataset, its manifest entry fields store the snapshot ID in which the file was deleted and status 2 (deleted).
+                snapshot_id=self.snapshot_id if status == ManifestEntryStatus.DELETED else entry.snapshot_id,
                 sequence_number=entry.sequence_number,
                 file_sequence_number=entry.file_sequence_number,
                 data_file=entry.data_file,