Running GW 8.0.2 on NW 6.5 SP8

I'm having two problems:

(1) I want to add a group of users but not all of them populate under "Users" when I add the group. (They're all on remote PO's, but everything is SOAP capable...)

(2) I don't mind adding these users individually if I have to, but I have a few which, even when I do this, consistently show "Last Active" as None under the Audit Users tab. My thinking is that this is showing when the connector last contacted their mailboxes, and nothing will sync if there's been no contact, correct?

Anyone else had any experience with this, or any ideas...?