looking for someone that really knows the answer, not just guessing at it.

I have a site with several hundred items on it,  each item has this one picture in it.   I need to change that picture and really dont want to revise each and every listing.

My question is, if i delete a pic in photobucket and replace it with the new pic and name it the same exact name as the other pic,   will it replace the picture in all those listings?

hope this makes sense.