I was surprised to see John Cater on WGCL last week, too! And I immediately thought, so, has any on-air talent been on all four stations?
I also noticed that Mike Paluska joined WGCL a couple of weeks ago. It appears that Mike Moore is now gone altogether. And Helen Neill had her baby, so that would explain a second (temporary?) opening for a reporter. I've seen Tracye Hutchins fill in for Helen at noon recently.
I don't watch WXIA enough to say for sure, but unless something happened recently (like the past two weeks) Duffie Dixon is still there.
Tiffany Reynolds is no longer listed on WSB's web site (that is the last place she worked, right?). I don't know about Pam Martin. Last time I saw her was when she covered the tea party protest in Marietta back in April, I think.