To protect your to-dos from unintentional deletions, we decided to not sync the deletion of to-dos in Outlook back to Wunderlist. So if you delete the task, it will get recreated with the next sync.
This is especially usefull if you have any issues with a task.
If you really want to remove a to-do, please use the specific Wunderlist delete ribbons. You can either:
- Right-Click on the task in the overview
- Open the task and use the ribbon on top