lat9,
based on what you are saying, this only comes into play for NEW images that are uploaded after IH was installed and with NEW names.

based on what you are saying i would need to delete the OLD images PRIOR to the upload, as opposed to after the base image gets uploaded.

listen, i see the beauty of IH. what i'm not sure you are seeing is that there is a definite bug here. which is either part of the base ZC or part of IH. when i upload a different image with the same file name, the old file remains. and IH does nothing to address that issue.