When a model is opened in Fitting, a copy of the model is created for each Scenario in the model (i.e. 3 scenarios yields 3 copies of the model).  Each created model has a different active scenario selected.  These model copies are retained in the Fitting window until the exercise is complete and the window is closed.

Although not typically recommended, multiple exercises on the same model are permitted within Fitting at the same time.  Multiple exercises on different models at the same time are also permitted.

Do one of the following:

• Right-click on the tab containing the model title and then click on Close.
• With the model you want to close in focus, click on the Close Exercise icon  in the File toolbar.