how can I retain a cover of my own for an EPub when merging it with other EPubs?
Hello. Let's say I change a cover in an EPub's metadata (no matter whether I download it or use a picture I already have). If I then use EPubMerge to combine that EPub with one or several other EPubs, its cover "reverts" to the original one, meaning the one I inserted trough the metadata tool is gone entirely. And apparently this is also true if I try to upload this single EPub (not merged with others) on a website. Is there any way to fix this, that is to really replace, on a "deeper" level, the original cover with the one I chose ? Thanks a lot in advance.
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