Interesting QF SYD-PER movements today

[Jim M]

Hi all

Noticed OJD operated its usual 581 today,then OJC operated the 577 service to PER.
However,it seems as though OJD then operated the QF566 return and I'm gathering,according to ACARS that OJC positioned back to SYD as QF6111. Did QF582 not operate today?
Another site is saying that OJC operated the entire 577/566 rotation,but this appears to not to be correct.

Anyone know what's going on?

Cheers
Jim