I renamed "Seventh Tour Of A Seventh Tour" because there were 3 other setlists that already use "Seventh Son Of A Seventh Son". You can see this on the artist statistics page:
http://www.setlist.fm/stats/iron-maiden-3bd6803c.html

If you want to rename them all to "Seventh Tour Of A Seventh Tour" that's fine. We just need to make sure we are consistent, and all shows from that tour use the same name.