Mavericks and use of Address Book

I think I've made a mistake by upgrading to Mavericks. When forwarding emails I used to be able to click the forward button and then click and drag selected email contacts from my contacts book to the email address line. Now that doesn't work and I have to cut and paste the entire group into the address line and delete any addresses that I don't wish to send the email on to. Is there some way I can click and drag individual names or a collection of names not comprising the entire group? Any help would be appreciated.