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How to Undo a Paper Withdrawal
If program organizers want to revert a submission withdrawal, they can do so by going to the forum of the withdrawn submission, locating the Withdrawal note posted on the forum page, and then clicking on the "Withdrawal Reversion" button located on the bottom right corner of the note.
Withdrawal Reversion button
Withdrawn submissions can be restored by deleting the withdraw note. On the forum of the withdrawn submission there will be a note like the following:
Using the trashcan button to delete this note will restore the submission.