I asked that question to bigstock once and this is what I got back:

"The system is designed this way to prevent frivolous uploading and deleting of images, which costs bandwith and storage."


I didn't realize that any other agencies factor the deleted by user photos in the approval rating?

J.

whitechild yes, it's so true. and i found out only recently . it was my own silly mistake not to have noticed it sooner.
sometimes i do this because i would be working with different frames and after submitting one frame, i find i actually prefer the second frame . probably due to tired eyes after working too late.
now, i don't upload an image until i am certain that is the one i want for the site. better still, i stop uploading images at the end of a long hard day's work. i wait till the next morning after a good night's rest.