Restoring Trend Tracker Iterations
Using Trend Tracker, you can restore the model to an earlier iteration. When you restore an iteration, two events occur:
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The Trend Tracker items in the tree rollback to the selected iteration. The journal, gallery, and graphs display results only up to the restored iteration.
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The model opens in the restored state. This occurs only if saved backups exist (see notes below for more information.) Iterations are saved in <results folder>\Trend Files.
To restore the model to an iteration:
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Right-click Trend Tracker 
and select Restore Model to Iteration.
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Select an iteration from the list and click OK.
You have the option to not save backup files.
To disable saving of iterations:
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Click Simulation, Options.
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On the Default Options tab, click Results.
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Clear Backup models for Restore to Iteration under Trend Tracker.
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Click OK.