Yes, in-house users with Crik-IT admin permissions can do this by clicking on the Tools tab, then the Make Bulk Changes button.  From there, choose ContactNoteStatus from the drop-down menu.  Then choose the status you want to change, and the status you want to change the contact notes to.  You have the option to filter which contact notes to change based on contact note date, contact note responsible user, and contact note type.  Then, click the Change Contact Note Status button.  When Crik-IT has finished changing the status on contact notes, it will display a message telling you how many contact notes have been changed.