Hi,if you look at this from a purely technical view point, then both instances can be running at the same time. They share no resources/data, so as long as you start them on separate ports, there will not be an issue. You could even have them running on the same server(not recombined but possible) For example, when you develop locally, you have two instances running on different ports.Going back to your issue, as bsloki has said, you should really have run a full set of regression tests on your ...