Re: Check if checklist item is checked in a task.
Hi @Miimii ,
Do you want to check all tasks in all buckets in the Planner?
When the item of the task has been checked, delete the task. If it has not been checked, skip the task?
If so,I did a test for your reference.
In my scenario:
1.My plan flow runs once a day.
2. All tasks in the Planner are listed.
3.In Apply to each, I get the details of all tasks.
4.I use Filter array to filter out the records whose 'Checklist is Checked' is equal to true.
5.When body('Filter_array') is greater than 0, go to the yes branch and delete the task.
6.If body('Filter_array') is less than or equal to 0, go to the no branch and perform no operation.

length(body('Filter_array'))
Best Regards,
Sunshine Gu