Hey all!
All of you that have some MySQL Database hosted somewhere and wish you could get the content into Wix Data Collections will be so happy. I just pulled that off and wrote an extensive article on how to accomplish it.
Andreas, another thing: did you realize you just solved the problem that Wix DB does not have an auto-increment field. If you just added the auto-increment ID-field to the JSON collection, you would be able to use autoincrements in Wix!!!
People, the original article was written by Andreas, who since then has stopped doing development in Wix and closed all his Wix-related web sites. Because asking questions about it is therefor no longer relevant, I´m closing this post.