Unlocking an item by editing it on all Web sites
You may be able to unlock a locked item by explicitly selecting to edit it on all Web sites. You can then modify it on the Web page. Note that your changes will appear on other Web sites as well. To see if an item appears on other Web sites than this one, check the BluePrinting Status property in the Properties dialog of the item.
Procedure
What to do next
You can now modify the item. Changes appear on all Web sites.