Thanks Fred.
I was not aware of that context menu option. That's precisely what I need.
Meanwhile back with my problem "1" above. One way to induce the type of problem I have described is to load a full page image, go into page edit mode and click swap dimensions and then apply to selected. After choosing "Yes" to the prompt the image is resized to fit page and rotated 90o. Now swap the dimensions again and apply. Nothing happens. I would expect the image to retain its reduced dimensions and rotate 90o.
Admittedly this is an unsual procedure but it does induce the type of problem I have come across in more "normal" use.
Regards
I think there's an easier way to do this.
In Qimage, right click on the preview panel with your image in the queue showing poster multiple pages, and select Print Single Poster Panel.
See screen snaps attached
Fred