Drag multiple line items in quote element

It would be great feature if you could drag multiple line items at the same time in quote.

Now its really slow to drag each item separately when I need to move multiple items under other subtotal.

The copy/paste doesn't work after pull sheet & manifest has been created because the linking have been set to the original line not the copied.

One possible solution could be if flex creates "move to other subtotal" to the bulk edit command.

Other solution is to create integration to organize the list by categories but I wouldn't want to replace all flex's problems with integration...

Any tips or ways this could be done with the features that are available in flex atm?