To send an accessory and pose the character before ZBrush Pose Link > Send Current Pose was used, follow these steps:

1) Use CC GoZ > Relink to send the accessory to CC.
2) Transfer the pose from CC to ZBrush.

To send an accessory and pose the character after ZBrush Pose Link > Send Current Pose was used, follow these steps:

1) GoZ the current pose from ZBrush to CC.
2) Use CC GoZ > Relink to send the accessory to CC.
3) Transfer the pose from CC to ZBrush.