Removing all the Rooms from the timetable

Global un-rooming

 Q.   Is there a quick way to remove all the Rooms from the timetable?
I want to remove all the Rooms before exporting to our MIS, as we've just had a lot of building work and I think it will be easier to add the Rooms after moving the timetable to the MIS.

 A.   You can remove all Rooms by going to "Check & Tidy -> Rooming Overview -> Global Room change" ...take the defaults (ie. move any teacher/ subject/ class/ room, to new Room "none/remove") ...and click "Perform Global Change".
You should take a Backup first, in case you change you mind later.