I'm not sure if this already exists, as SER is such a vast software with all kinds of hidden features, but I think it's worth mentioning.
I'm building all kinds of tier 1 links to my projects (outside SER) constantly to which I'm also building tier 2 and 3 with SER. Well since I have multiple sources of tier 1 links, I'd like to be able to somehow update my Tier 2 projects in GSA with the new tier 1 links that have been created. Whether this would be an XML file, a txt file, URL it doesn't matter as long as SER is able to scan it and import the URLs directly to the project.
Example: I create a small script which gathers all of my tier 1 links into a txt file. It gets updated daily, hourly or whatever. I set my T2 project in GSA SER to monitor that txt file and update the URLs from it.
I can see that there is an option to import an XML feed of URLs into the project, but I'm not sure if this is dynamic or the URLs will be downloaded from that XML feed only once. I'm guessing it's the later.
What I mean by URLs is URLs we're trying to submit, not target URLs: http://prntscr.com/6u3eki