Was doing hive skirmish about 1hour 15 mins ago. Upon destruction of all the critical skirmishes / queens within Cantus the lesser hives in Cantus failed to respawn. When following the hive after victory in multiple large skirmishes the hive would retreat to Cantus G2, the location of the mostly recently destroyed hive queen. In the past eliminating all hive queens within a system also ended all hive skirmish within the system.