SQ flights on velocity

Hi,
Have anyone noticed all there why has SQ not released any biz class seats on the popular syd-sin return route on velocity booking system? I noticed this a few months back when i attempted to redeem points for a biz class tickets for a syd-sin route and there was literally nothing except economy/premium eco seats. In fact I have tried the other way around which is the sin-syd route and there was always biz class tickets avail at least 1 though. As I am planning to travel in early jan 2027, I have been checing the system every now and then. Then I realised that for the past few weeks, it seems that biz class tickets for the sin-syd is also gone?! Does anyone out there know whats going on? the only news i know is that velocity is shifting towards a revenue based status earn.