When making manual changes to your calendar, this creates scheduling exceptions for Task Events, Habit Instances, and Smart 1:1s. You can can reset those events, and Reclaim will attempt to schedule your calendar back to its original state based on your Reclaim settings.
Note: Events with scheduling exceptions are marked with a flag icon after the name.
To reset the scheduling
Find the Task or Habit in the right side-panel of the Planner
Hover over the flag icon.
Click Reset habit or Reset task.