starnet59 It looks like the answer is no. I assume AI Denoise reads FIT files - why would you start with a noisier JPG file instead when you have the uncompressed and larger pixel depth FIT? - but it only writes JPGs, which makes it a gimmick, not a real tool. There is of course nothing stopping ZWO from writing both FIT and JPG results, they simply chose not to.
So let me add another request to the already very long list, please ZWO, add an option to export FIT files out of the AI Denoise process.