We have 4 connection servers installed by a previous admin - I'm new to this position and planning an upgrade from 7.3.2 to 7.13. In reading the documentation, instructions say to choose either standard server or replica server installers. I know our first 2 connection servers were installed as standard, then the other two are replicas. In performing the upgrade, do I use replica installers the same way, or since it's an upgrade, should I just use the standard installer for all 4?