The online records can take quite a while to update, they do eventually.
You can get situations where only a portion of your new records appear straight away, and others don't.

When the PSN came back from the prolonged outage, not all the records were able to be viewed, this has slowly be rectified, but I imagine that with all the new players the wipeout servers are getting hammered, especially the Multiplayer/Eliminator/Venom & Flash speed records.
Phantom & Rapier wouldn't be getting hit as much, neither would Zone /Zone Battle.