An Undo Check Out reverses a checkout, and allows you to return to the model that you originally checked in. Undo Checkout acts on the object, like an Servigistics Arbortext IsoDraw .iso or .idr file, open in the active model and reverses any changes that were made to this object after it was checked out.

The Windchill preference, Undo Checkout Overwrite Local Content, available from Preference Management, specifies whether the model content is overwritten in cache by default when using the Undo Checkout action. The preference default is set to False, meaning that model content is not overwritten in cache by default.