FortiWeb High Volume Active-Active HA and session pickup

[AEK]

Hi FWB admins

In FortiWeb standard A-A HA I can see session pickup (in CLI), but not in high volume A-A HA, while I think this feature must be available here since HV A-A HA should keep the sessions on fail-over, as this is basic HA feature when the sessions are critical.

So is it implicitly enabled even not shown or it just doesn't exist in HV A-A HA?