8.5 designer & 6.5.x client

We will upgrade our servers and clients from 6.5.x to 8.5 in the summer, (waiting for Avaya moduling msg s/w) - are there any issues with upgrading our four developers to version 8.5 whilst leaving the rest of the users and servers running 6.5.x ?

Subject: *No, just don’t use anything that will not work in the Notes 6.5 client

Subject: Thanks for your quick response