Can anyone please explain ghost reward flights on Qantas website?

Hoping someone can explain something. I’ve been searching for reward flights to Europe from various Australian cities around June/July 2023. I’ve been noticing when searching with flexible dates that a number of reward flights will show for say 5 days in a row, however when you click on it, it doesn’t exist on the individual day. Is there a simple explanation for this? Thanks in advance.

Seems like this is a “common” occurrence.

I am having similar issues, I’m a bronze member and suspect it has might have something to do with being post 297 days. Is anyone able to confirm if that is the case? if it is am I able to book a RTW tix that is simply a return somewhere and then change it for the 5000 points hoping the ghost seats can be accessed by me in a few weeks if they remain?