You didn't even mention the REAL problem: that the "C LL1500" label over BK doesn't exist on the Sydney VTC.
Errrrrrrmmm
For example, when I select the current Sydney VTC on the EFB I use, there is no depiction of the vertical dimensions of the YSBK airspace, no matter how far I zoom in.
I don’t know how more clearly I could have articulated the REAL problem.