Batch rename items in Data Explorer

[Resurgam]

I have a number of databases which store the results of eBay auctions, via the Firefox Scrapbook extension, but all the results appear in the Data Explorer prefixed by (in my case) "ebay.co.uk" followed by the actual item name. This isn't a problem, except that it wastes valuable screen space. Is there any method to perform a 'batch rename' in the Data Explorer panel, to remove the prefix?

Regards, Geoffrey