Steps to reproduce:

1) Modify any of the files included in the agenda, save it;
2) org-mobile-push
3) @mobileorg, sync and wait...

The changes are not there.

The Workaround is a two-step process:

1) Run org-mobile-push again (yes, from my tests, it should be ran twice at
least, not sure why, something related to the checksum)
2) Press the iphone/ipod-touch home button to exit the app, enter it again
and sync.

Marcelo.