The "Change Data Series" feature on the charting right-click menu and the Chart Tools menu lets you replace the current chart with another chart, while retaining any chart tools and studies. This feature does not take the place of your portfolio list for selecting a pre-defined series to chart, but allows you to create new charts from scratch.
To activate, simply click your right (not left) mouse button and choose "Change Data Series." UA's "Selecting Data Series" screen displays, where you can define the contract or stock to be displayed.
All studies on your original chart will be retained and recalculated for the new data series.