There is a problem here because if I have ticked a route in my personal guidebook but not dated it when later logging details on my UKC logbook, it demands a date of some sort. Why can't I leave it blank? I am talking about climbs done 40/50 years ago and have no memory of the ascent date of a host of minor climbs. If I can't recall my partner I can miss it out and no problem.
I'm sure this has been encountered by others and most likely even discussed on this forum.