The Navan data was incorrectly given the wrong date on the server, so it did not appear as a Jumps circuit in today's data. This has now been corrected.
If you are filtering your courses by course type (Flat, Jumps, AW) then you may find that Navan is not listed. You can get round this by temporarily ensuring that Flat, Jumps and AW are all ticked on the Events tab and reloading the races.
Apologies for the inconvenience.
Alistair