I'm seeing a particularly frustrating problem on Cura 4.2.1 on Windows 10. When I make changes to an existing profile and then use the "Create profile from current settings" command, my settings are lost.
Steps to repro:
1) Choose the Fast 0.2 mm profile
2) Change the Printing Temperature (I choose 205c).
3) Select ""Create profile from current settings/overrides"
4) Name the profile, "Foo"
All changed settings are maintained in the print settings panel under the new Foo profile
The foo profile changes to what appears to be the Fine profile (layer height is 0.1mm) and all changed settings are lost.
This is such a mainstream feature that I have to think my Cura files are corrupted in some way, but I don't know enough about the Cura file structure to know what I should attach here for diagnosis.