Task Batch not always adding the right tasks

[justin-guan]

Task Batch will re-add tasks that have already been added if a user hits tries to do multiple adds. For example if a user presses Add Task, a task will appear in the screen as it should. Then if they hit Add to Single Day or Auto Add, it will add the tasks as it should. However, if a user then tries to add more tasks after this, the tasks from before will also be added. This is because the list of tasks to add is not being cleared properly.