Hi.
It would be amazing if on the Move Tab to... options we could choose a new window that we have already created. Very often I want to move multiple tabs to the same window so as to have two (or more) open windows for different tabs I currently need open for different reasons. The problem is that, unlike Google, Firefox doesn't have this option. You can, in fact, send a tab to a New Window, but you cannot move it to a New EXISTING Window, which would be very useful.