•Undelete Last—Recovers the most recently deleted image. (This option is only displayed after a Delete operation has been performed.) You can recover only the most recently deleted image, including entire panoramic sequences.

Once you proceed to another operation, for example, powering off the camera or taking another picture, the delete operation you performed is permanent, and the image is no longer recoverable.

NOTE: When one shot from the center of a panoramic sequence is deleted, all of the panorama tags for that panoramic sequence are removed. Each image becomes an individual still image. However, if you delete an image from the beginning or end of the panorama, and there are at least 2 images remaining, the panoramic sequence is preserved.

70 HP Photosmart M22/M23 User’s Manual