There should not be a limit in how big my list is when I am trying to add it to an event. I've had a couple of events where the invite list is over 100,000 and I have to export it and then break it up into numerous queries of 20,000 and then make those into a list and then add them to the event - this is a waste of my time when I already have the list created. This should not require a workaround