If you're asking yourself, 'Do we have to do all that again?' the short answer is no, we don't. When using Unifi both ends, building the other half of the integration is a simple two-stage process.
First we Move the Integration, exporting it from one instance and importing it to the other (creating a mirror image in the other instance).
Second we Reconfigure the Connections so that each is pointed at the other.
We will look at both in more detail over the next couple of pages.