admin button changed counting ebook edit exact file item order overwrite previous product sale selling separate upload uploading version

If I make a change to an ebook that I'm selling through e-junkie, will I be able to upload that changed file without the new file counting as a separate item for sale? What do I need to do in order to overwrite the previous version? (Is it as simple as uploading the new version using the same exact file name?)

You can simply overwrite the file using the overwrite button in E-junkie Admin > Edit Product.