Thanks, MY Blackberry - very back-up up - I do it daily and keep copies of everyone.
You should take a backup of the device ASAP and then on the device go into Options > Type Default > Select Default Services > Ensure the correct calendar is selected > Then try the one way sync again.
Unfortuntately this didn't work. I think I see the problem but don't know how to fix it. For some reason my calendar entries are no longer in "Default" (they used to be!). Actually "Default" does have some entries - they are syncing.
But the majority of the entries are in "email@example.com" - and this is the one selected in Default Services. I even have this one selected in my Calender - it just wont sync to it!
Anything else to suggest?
(who still really doesnt like Telstra at the moment but is very grateful for the Form help)