Move bookmarks in a PDF

What is the best way to move bookmarks in Acrobat 11?  I have a form with bookmarks OP-400 -1 through OP-400-10.  The user of the form wants me to add section OP401 which I did, but it looks like the bookmarks for OP-411, OP-416 & OP-417 are under the OP-400-10 bookmark instead of under the OP-401 at the root level.  I just wanted to see if there is a way to move the various bookmarks around so I didn't have to recreate them to get them in the correct order.  Thanks for the help!!