First – go into your contacts and hit menu -> View
If they are all under google then great, this is easy. Just go into settings -> Sync > Google Mail Account -> Contacts -> Check the box. Then press sync now. Then go check google to make sure they are there.
(That’s the easiest way)
IF the contacts are under phone it is a little more work but still able to be done.
First you’ll have to export to the sd card. Then when that is done it will appear they are gone (they’re not – don’t panic – I did this once). Now – import to the phone – but choose google as the contact input. Then follow instructions above.
Once that is done you can reset.
Good luck!! Let us know how it goes.