Multi-versioning question

["Nathan Simpson" <nathan@xxxxxxxxxx>]

Hey,

We have 3 domino servers currently running 8.0.2

There is a mail server, a Sametime server and a Quickr server. We have 
replication setup between the servers as Pull/Push with the mail server 
being the main server.

I wanted to upgrade to Quickr 8.2 and it only runs on Domino 8.5.

I know it can be done to upgrade to 8.5 on one partition and keep the others 
at 8.0.2 but I would normally have thought your should upgrade your main 
server first. As this is the one with the master copy of the address book.

So if I upgrade the Quickr server to 8.5 and the NAB upgrade takes place 
what will happen to the mail server as it is running 8.0.2 or would I just 
change the replication setting so it won't pull anything from the Quickr 
server until the main server is at 8.5 too?

Thanks

Nathan