Reset History 
Access: Open this function from one of the following locations:
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Right-click on a feature in the Feature Tree and select Reset History from the popup menu.
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Select Edit > Feature Management > Reset History from the menu bar.
Remove all the features before the selected feature.
This improves the system performance for parts with over 300 features.
Example:
Right-click on a feature in the Feature Tree and select Reset History.
A warning dialog is displayed informing you that you cannot undo this operation.
If you select Yes, all features before the selected feature are removed and a new, ResetHistory feature is created.
