I'm going to jump back in on this even though my first reply was unclear and incomplete
there could be two approaches that I know of why:
To paraphrase Merlin: forget the suffix, its the naming convention dealing with what the first product image begins with
"There are only in two product pages this occore: In WD1 and WD2."
WD1 will get images from WD10 or WD15 etc.
WD2 is getting images from WD22, WD25, WD27 etc.
Imagehandler got all screwy (technical term) - instead of deleting the product just delete the images in image handler (or remove database reference)
probably the first one which is super common and happens to just about everyone I think...:smile: