Tasks by Planner and To Do: Plans in a team under “Shared plans Planner” can’t be deleted!
- Add a channel in a team, and create plans by adding Tasks by Planner and To Do tan in the channel.
- Uninstall the Tasks by Planner and To Do app from the channel.
After you do the above, plans shown under the team in “Shared plans Planner” disappears. But if you open the channel in Teams, you see plans still exist in the channel, and those plans can’t be ever deleted.