I've created subtasks to a task and it shows like
And when I applied grouping, sub-tasks are no more sub task and become a individual task like
I just want to show sub-tasks as first image even after apply grouping, How to achieve this? thanks
Unfortunately , you can't show multi-level task structure
with custom views that have a grouping or sorting or filter.
So in this case, you should not try to customize the default view that shows task structure , and prepares a new custom view with your (Grouping) requirements.
Meanwhile , There's a workaround that may help you:
Parent task ID
, and update the subtasks with its related Parent task ID
then group by this field in your view.