I have a W910i and this is only with this phone I have experienced this.
When having around 300 messages in the in/sent-box, I select the whole batch from one oif the boxes, click Move to archive, and everything seems to go fine.
The sms'es are archived and removed from the view.
But if xxx refresh, often all of them reappear in the view in MPE.
Then I can try variuos stuff to get rid of 10-20 at a time:
- Re archive lots of times
- Delete messages
- Disconnect using F1 and then reconnect
After having done this several times, I end up with a clean view even after refreshing.
Any takes on this?