I'm having issues copying over an attachment from one list to another via SharePoint designer. I was able to copy over other fields using the Create Item Action in SharePoint Designer. However, the attachment itself isn't working.
It looks like this is possible, as, Nigel says he's done it here: Approval Workflow - Moving document to a read only document library
However, I keep getting an error message. Also, this needs to be done using SP Designer.