Someone who signed up to attend a training session cancelled so I deleted their name from the response grid. Then they decided they would attend. Is there any way to get the information they entered on the sign-up form back?
One difference between that post and your case is that you're looking to restore a deleted row and they were looking for a deleted file attachment. In your case, I assume you'd like to get that deleted row back into your response table.
Once you've found the deleted row, click to the left of the row to select the whole thing.
Then CTRL-C to copy the entire row.
Close the history widget to go back to the current version of the document.
Add a new blank row.
Select the furthest left cell in the new blank row.
CTRL-V to paste.
(This assumes you have not changed/added/remove any columns since deleting the row - if you have, data could end up in the wrong column)