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When you purge ECOs, Engineering removes all implemented and cancelled ECOs as of that date from the database, along with all related information (except for the revision history of the bill itself). You cannot view or report ECO information once you purge it.

   To purge an ECO:

1. Navigate to the Purge Engineering Change Order window. See: Submitting a Request.

2. Enter a range of ECOs to purge.

3. Indicate whether to purge implemented ECOs.

4. Indicate whether to purge cancelled ECOs.

5. Enter a date on or before which all implemented and/or cancelled ECOs are purged.