Yes Mini@nB
Everything is built from the xml file generated by the GUI and called <project_name>.flash-settings
The GUI shows the file generation and programming commands for both elf and sof files and everything looks correct.
The two .flash-settings files (for the 2 projects) are absolutely identical, except for the project name and cpu address (as expected).
But ... one generates a command which uses only one .flash file identical for both .elf and .sof while the other (the good one) adds a "_1" to the .flash file name allowing me to get the two .flash files that can be sent to a remote location for upgrade.
I'm guessing the difference may come from another file in the project (.bsp, .sopc_info, .qpf ...) but I've been able to figure which one out.
Thanks.
jylo