Add pics back to Seek via camera roll?

I deleted some pics from iOS Camera Roll, making them disappear from Seek. After putting them back to camera roll via AirDrop, they still don’t show up in Seek. Seek does not recognize the species at all if I ask it to identify the image, even when it was species-level ID’ed before. Is there a way to re-link the pic with the observation? thanks
(ps I’ve seen that the new pics are stored in Seek now, but I’d like to have pics from an older trip.)

Is there any chance the photos you deleted are still in the phone’s Recently Deleted album? I’ve found that if I restore photos from that album, Seek will be able to link to them.