P: (Masking) Multi-select and batch manage multiple selections within a single mask

In the current masking panel, it is not possible to select multiple selections within the same mask.
For example, when a mask contains several selections such as Object 1, Object 2, etc., I cannot Shift-click to select both and perform actions on them together.

Currently, we are forced to:

• Move selections to another mask one by one

• Delete selections one by one

• Invert or manage each selection individually
  
  

I would like to have the ability to:

• Shift-click / multi-select multiple selections within one mask

• Move selected selections together into another mask group

• Delete, invert, or manage multiple selections at once
  
  

This would greatly improve efficiency when working with complex masks and multiple detected objects.