On the ribbon, click Manage tabModify panel Replace Model Reference.
In the Replace Model Reference dialog box, select a model to replace.
Click the Select New Model button, and find and select a new model file. Then click Open, and Yes.
Click OK to close the Replace Model Reference dialog box.
Note: When you select a view that does not include a flat pattern, that view is deleted. Similarly, when a presentation does not contain the same explosion name as the original file, the view is deleted.