The window was set from 23:00 or 23:30. When i added the 22:30 slot manually to add it on, this wiped the pre selected slots up until 14:00, but kept the22:30. I did this change at around 6pm and multiple attempts after trying to fault find. I ended up changing the window from 22:30 to 16:00.
After 4pm today however, no pre selected slots were filled for over night/tomorrow. Until i just went in now and opened and re-saved the agile window. The only anomally i can see here is the 22:30 being selected due to being less than 8p?