Thanks very much for your reply! I will need to do similar as hoping to 'stretch' flights over a year, so no availability yet on dates I want. I, myself have msg Qantas with the following enquiry: 'Will points cost increase to 318,000 for any changes made after 18 Sept' and (unfortunately) received this reply today. 'Any changes made to any booking, will be as per the calculations of that day. That being said, any changes made after the points increase will be reassessed to 318,000 points per person'.Hi - sorry for the silence - we've been in China and it's exceptionally difficult to get internet! Yes I researched dummy dates for all my remaining flight segments after LHR (which I had previously booked) as we won't actually be taking them until late 2020 through to March 2021. I got a really helpful agent (I know - what a surprise) who made all the bookings for me - he knew exactly what I wanted and seemed pleased that I had done the research and had a complete list of flights ready for him to book. It came in at 280k each and was ticketed within 10 minutes. I am planning to rebook all those dummy dates while we're living in Europe next year to the correct ones. I've stuck to major airport hubs and the major airlines to make it easier to snag the right flights because we can't change the route or carrier but we're so flexible with our dates (we're retired) I'm hoping we can do it successfully! But it will be late 2020 before I find out! Hope this helps!