Unwanted version sets with saving JPEG, PE2026

Hello,

I was just forced to switch to PE 2026 (from 2022) for compatibility with raw images from my wife's new camera. She edits raw images, then saves JPEGS. In the File->Save As dialog, she selects JPEG, and makes sure that the boxes to add to catalog and save in version set are NOT checked. Regardless, each new JPEG gets saved in a version set and displays in line with other versions in the organizer. Have others encountered this? If so, have you figured out how to stop it? I know that it is possible to manually remove an image from a version set, and to stack version sets in the organizer. It seems like these actions should not be required.

I have one additional question about the 2026 organizer. We are seeing thumbnails like this:

When I hover over the little icon at the upper left the text "Non Match" appears. What does this mean? My google searches have been unhelpful so far.

Thanks for any information you can provide!