I'm moving teamcity V9.0.3 installed on a Win 2008, to V10.0.1 on Win 2012. The V9 agents are on the same Win2008 box.
I wish to do this safely. I was going to first export then import configs into the V10 environment but note that when the V10 teamcity Agent service starts the referenced V9 agents will be automatically updated on the Win2008 server. I presume the refreshed agents, now V10 will not function with the V9 environment. I only want to cut across to V10 after I'm happy it’s ok. But up to that time, I don’t want the V9 touched. I acknowledge I will use the same database but I can back that up first.
Is there a way of doing all this safely, minimizing risks to the functioning V9 environment?