Windows 2000 Active Directory - W32Time and KCC question

I am in the process of replacing my DC's with better machines.  All are done but one.  This last one held the Rid Master and the PDC Emulator roles before I transferred them to the new machine.  Being that it was the PDC Emulator, I made it the authoritative time server as well.  Now that the roles have been moved, I made it's replacement the authoritative time server.  I never did anything to the old machine to let it know that it wasn't the authoritative time server anymore.  Is there something I should have done?  I setup the W32Time service on all DC's to log everything and they still use the old DC to sync time with.  I am scared to dcpromo it down being that all the DC's rely on it for time sync and for another reason mentioned below.  Shouldn't the DC's automatically use the PDC Emulator for time sync or is there something I need to do to let them know that they should be sync'ing up with the new machine?  Also, all of my DC's that are in remote locations replicate with this machine.  Once I dcpromo it down, can I rely on the KCC to make new connections with one of my other DC's or is there something I need to do?  I have three DC's in HQ - 2 new ones and the one that I am waiting to dcpromo down.  I have made the two new ones preferred bridgeheads for the IP site link.  It's only been a few miinutes since I've done that so I haven't seen any change yet.  Was that the correct thing to do?  Thanks in advance.