Don't do anything, especially to change your I-485's A#. - 回複:我也
Your A-file is based on your I-485's A#, and such A-file should merge your I-140 approval notice, even it contains different A#.
Always use A# from I-485.
Please refer to "File Management" http://blog.wenxuecity.com/blogview.php?date=200708&postID=19650