The only way to batch update wire attributes/properties in VeSys 2.0 Design is to use "File > Import > Import from...", if the edits were made to the X2ML file then import will be quick. You can familiarise yourself by exporting an X2ML file (File > Export > Export to...) and looking at it using Notepad++ or other smart text editor.
I am also facing the same issue as ranganathan faced.
I unable to understand that what you meant to say "editing X2ML"
Could you please explain this clearly once again and that would be very much helpful for me?
Once you have exported the XML file, use a tool like Notepad++ to edit the attributes. There you will see all the wires, and a placeholder for each wire attribute - setting the value in the XML then re-importing into VeSys 2.0 Design will update the design.