Ubuntu – Send Maximized Window to Another Workspace

Simple way: Use workspace switcher and drag the window to your desired workspace.

Ideal way: install compizconfig-settings-manager (click HERE to install) and enable edge flipping.

After installing, invoke compizconfig-settings-manager with ccsm or by searching in Dash. Select Desktop Wall and in the Edge Flipping tab check "Edge Flip Move."

Now you can drag windows between workspaces. (Note your pointer needs to press against the side of the workspace around the middle.) It takes a second before the viewport changes.

Compizconfig-settings-manager can also set keyboard shortcuts to move windows between workspaces:

There doesn't seem to exist an option to do that in Compiz.

You can install the CompizConfig Settings Manager (package compizconfig-settings-manager, program ccsm) and raise the Edge Resistance Distance in the Snap Window plugin options in the Window Management section:

This will help to prevent pushing a window outside of the screen. However, if you move the window too fast it won't be triggered, so it's no optimal solution.

Maybe this issue is worth a mail to the Ayatana mailing list? :-)