Out of office rules not working if TO filed contain group in the rule

Question

If one of our users is going on holiday they need to check in the out of office function in the outlook. In the outlook there is a rule editor in the Auto-reply. In the upper side in this editor there is a FROM and TO filed.

So I would like to achieved the following:

1. If someone send and e-mail directly to this mailbox than the sender got an e-mail with the out of office message. - Its ok.

2. If someone send and e-mail to a group which group is contain the users who went to vacation, than forward the e-mail to an address.

   So I set the Group in the TO filed in the Auto-reply rules editor and set an e-mail address to the Forward action in the editor. Unfortunately this not working.

   But if I set the user e-mail address TO filed, or pick the "directly for me" than the forward rule working.

Any idea why not working the GROUP in the TO field?