This procedure describes how to unfreeze an existing, frozen snapshot. Unfreezing a snapshot allows you to add, delete, or reorder descendants, and allows you to edit the descendants themselves. If a descendant is part of more than one frozen snapshot, then you must unfreeze all the snapshots in order to edit the descendant.
To unfreeze a snapshot:
Navigate to the frozen snapshot.
Do one of the following, depending on the options available:
Click More>Tools>Unfreeze Snapshot.
Check the snapshot’s checkbox. Then select Tools>Virtual Document>Unfreeze Snapshot.