Hi Averil, Pauline, Col & Pat!
I've had a reply from Admin who say “The Archives have had to be split this way due to the volume of messages we have. The old system was failing because all messages were in a live forum and it was just not built for that capacity. In total there are 57,778 valid messages”. They are still looking into the organisation of these separate sections. They haven't lost the new messages that were posted to Archives 1 & 2, and are looking for a way to add them to the current list.
Sue