Drag window to another workspace

When using multiple workspaces, dragging one window from one work space to another would seem the obvious thing to do.
But since the drag-window-to-edge-to-maximize-it effect, you can move it by rite-clicking on window bar and choosing "Move to Another Workspace" from the drop-down menu.

To re-enable the dragging window option one should go on CompizConfig Settings Manager, in Desktop category click on Desktop Wall. Here, in the Edge Flipping tab one should check the Edge Flip Move option.

This will interfere with the maximize window effect, but with a little practice you can manage it. Drag the window slowly to the edge of the screen and when the maximize rectangle appears release the window to maximize it; or continue dragging the window until you reach the next workspace.