Have you also tried waiting for a few minutes (up to 60) to see if the events show up? For battery usage reasons, some events are cached (for max. 1 minute) and not updated all the time, but after 30-60 minutes (because of the system-aligned timer), both Billboard and the event caches should have refreshed at least once.
...could be that the Uni just "decomposes" the recurrences in the ICS export...