Also have a look at this video View: https://www.youtube.com/watch?v=qNYrA3fwqFQ
about the new visualiser setting, and you'll have less time worrying about universes and all you have to do is assign what props you want to the ports and xlights does the rest of the work. It's made life easier and when you make changes, there is no need to configure everything else.
There is also a new function in xlights that allows you to start again with the falcon F16 settings you upload. I changed mine and it totally stuffed it all up because it just pasted the new settings over the old, so old ports data stayed. The new function will save you from that issue!