Occasionally, you will want to revert projected containers. When you revert projected containers, they go back to the pool of unplanned projections. This is reflected by the Pool column in the Projections window.
To revert projected containers:
Open a vessel scan or a vessel section view.
In the vessel scan or vessel section view, set the time frame to Preplan.
From the Vessel menu, select Projections to open the Projections window (on page 1).
On the toolbar, select the Pointer tool 
.
In the vessel scan view, select the projected container that you want to move back into the unplanned pool.
To select several containers at once, hold down the Shift key.
In the Projections window, click the Pool button.
The containers move back into the pool of unplanned projections.