Saved param files does not store settings

I’m new to this forum and new to APM.

The thing is that I thought it would be a good thing to save a working configuration and then test some other settings. So I did. But, when I loaded the param file I found that the settings for in this case elevons did not save and I had to make them all over again.
Is not all the settings saved?


can I please get more info,

what version?
which screen?
and anything else important.

Version is the latest stable one. Downloaded a month ago.

The screen is either the full parameter list or the parameter tree list. That’s the only places I have found any save configuration option.