If you do not actually download photos to your gallery, they will not automatically post there when you add a picture to a thread.
You need to create an album in your gallery to place pictures into as well.
On another note, once you publish a photo in your gallery, it can not be deleted.
As Jinroh said, you have a time frame of appx. 6 hours to edit a post, meaning the ability to remove pictures. After that the edit button goes away. A moderator or App admin can still delete a picture for you. I cannot edit in this forum or I would do it for you.
Are you referring to the photos with a name watermarked on them Randy?
If so, PM me a reminder with a link to the post where the pictures are and I will have it taken care of....