@Falco Indeed refreshing my browser tab worked after updating the settings! It also seemed that the upload was considerably slower. And the downloaded file — with the metadata fully intact — was 10× the size when compared to previous iterations. All that makes sense, of course.
I realize that there are different use‑cases in play. The default behavior is useful for forums that are social in nature. But my application is to support science and research. And it is better that users make decisions about the appropriate format, resolution, and metadata for their various uploads. And that discourse simply passes the files through uncontaminated.
Given that there are logical bundles of settings, perhaps some kind of higher level configuration or interpretation would be useful?
Again, thanks for your support. And I guess you saw this recent posting too, regarding configuration hints:
Best, R