https://bugs.winehq.org/show_bug.cgi?id=50344
--- Comment #6 from Hans Leidekker hans@meelstraat.net --- (In reply to Alexey Kuznetsov from comment #5)
Created attachment 68932 [details] AppCompatFlags.reg
Ok. Maybe wine ignore unsupported registry keys. I simplified 123.reg to only have AppCompatFlags and run "wine regedit AppCompatFlags.reg".
No keys are added. I've check keys presence using "wine regedit".
Same reg file using regedit "Import Registry File" keys appeared!
Not sure it is a intended behavior. Or just those keys are not imported on my machine?
regedit doesn't restart as 64-bit when there's a command line to process. Try running 'wine64 regedit 123.reg'