CalDAV created as "manual download" by profile manager.

why CalDav account pushed by profile manager to my iDevices are created and setted as "fetch manually" and not as "push" ?

is there a way to tell profile manager to create them as "push" or at least to "fetch every X minutes" ?

if I manually create the account on my idevice it will let me set as "push".

if Profile manager create the account for me it will set it as "manual" and the "push" setting is unavailable.

i use iCal server from Lion Server (fully updated) and iOS 5.1 (fully updated)

thanks.