Zimbra server 5.0 addr book sharing

[Aryin]

Using Zimbra server 5.0 beta3 open source edition. I share my address book with others, lets say user AAA. AAA can view my addr. book. Also can send email to my address contacts by clicking new Email in Addr. book Tab. But in Mail Tab, new email then click the To btn. I search share contacts but no email result. The search result can show contact groups, however, the group contacts cannot add to the Email To/cc: fields.