His team wasn't transferred to GW2. They're just temporarily helping with GW2's release.
Which would be done now. So they're back to working on GW1 (or will tomorrow). Trust me, as member of the Test Krewe, there's still content coming.
But ignore dates. Just "if it's part of GW1 it goes here, if it's part of GW2, it goes here" - because what about talking about a character or event of GW1 from a GW2 perspective? Or talking about earlier events in regards to GW2? The last rising of the Elder Dragons is certainly before 1081 AE, but has no relation to GW1.
This isn't a topic that really needs discussing, since this forum is fairly dead anyways.