To Modify the File Update Sequence
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In the References dialog, select Properties > Update Sequence.
The Update Sequence dialog opens. The list box shows the current update sequence.

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In the list box, select one or more references or the active model.
Use the Shift or Ctrl key to select a range or individual files.
- Click the buttons to move the selected files in the chosen direction, or simply drag the selected files to the desired location.
- Repeat steps 2 and 3 until the sequence is modified as desired.
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Click OK.
Note: Changes to the update sequence are saved to the active model by selecting File > Save Settings.