The above document is from 2008. Prior to that, as you know, RTW tickets could have 15 open segments, and even longer ago an unlimited number of segments. I have booked c. 30 AONEs in the last seven years and have never been able to have an e-ticket issued without specifying dates. The last example was issued directly by BA who insisted on them.

If anyone has recently been able to obtain one without providing dummy dates, I would love to hear from you.