The video shows how to remove site from a task.
Select Tasks
Select task with unwanted meters
Edit
Select Sites
Filter is still active
Click on the first one you want to remove
Shift + click on the last one
Remove Items
Save and close the task
Task - Remove Site From Task
Choose navigation item Task
Select Task with unwanted meters
Select Edit
Select Sites
Hold SHIFT to select multiple records
Use Remove Item
Task - Remove Site from Task