We often need to re-group and re-organise tasks and subtasks but this process is unnecessarily painful in Asana sorry.
Currently, we have to drop subtasks into the main window, then move them one-by-one into a new task. At best, this an unnecessary two-step but most of the time it’s incredibly tedious and a huge time waster.
Also, depending on how your main window is sorted (e.g. due date), dragging and dropping subtasks into the main window doesn’t work. This creates confusion and wastes more time.
Feature request: Drop multiple subtasks from one task onto a different task in the main window.
Hope that makes sense.