Nancy, I can tell you EXACTLY why it's being deleted!
If you go to your gallery and place the cursor over this card and see it's name - floral_beauty_by_jeanstamping2.jpg - and then go over two cards to the one uploaded on the 2nd of March and look at it's name - floral_beauty_by_jeanstamping2.jpg - they are identical. When we run duplicate scans the system picks it up and automatically deletes the newest one as a duplicate. Try renaming it something different before you upload and it should stay in the gallery!
HTH, if you have any other questions, feel free to ask!