1. Regenerate in the sense that IF you replace any of the product images it will re-generate the image in the IH4 image cache.. Regenerate i nthe sense that if you clear (delete/remove) the images in the image cache IH4 will regenerate the image cache images.The STOCK images in the image folder however will NOT be regenerated if you delete it..
2. As the readme instructions state, (as does the first page of this support thread.. and I and others often say..) you DO NOT need to follow the DEFAULT Zen Cart structure for uploading large medium and small images.. UPLOAD THE LARGEST IMAGE and IH4 will take care to create the proper small, and medium images based on your image settings.. This means DO NOT use the medium and large image folders or suffixes or ANY of that..
Please do read through the read me usage tab.. It REALLY does explain in DETAIL how the image uploda works and other variations that IH supports (for example small image is one picture, while large image is a DIFFERENT image)
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