Important Distinction About Picture Uploads
There is an important distinction between picture uploads and attachments. Picture uploaded to your album(s) and linked into a post live in your album and can be reused or removed at your pleasure. Pictures uploaded to a post by attaching a file do not go into your "world" and you have no control over them. Instead, they live in limbo somewhere in the particular post where they were attached. They also don't live in the body of the post but hang out at its end.
I don't care for that approach so it's been a long time since I've attached a photo. Anyone with more recent experience, please correct me if I'm wrong.
“Often bumpy roads lead to beautiful places. And this is a beautiful place.”
— Dave Martínez