Indeed !
I did a dump dconf like this :
dconf dump /com/solus-project/ > /home/other_user/Bureau/budgie-dconf-dump
and then load in the other session with
dconf load /com/solus-project/ < ~/Bureau/budgie-dconf-dump
I just had to tweak a bit some applets settings, showtime and pixel-saver if i remind correctly.
…which sounds logical since those are not stored in dconf com.solus-project but in org.ubuntubudgie if I understand right.
This helped me Cloud sync all budgie-settings / backup & restore
Thanks a lot @fossfreedom and @puffettacicciottella
Next time I’ll also dump
dconf dump /org/ubuntubudgie/ > /home/other_user/Bureau/ubuntubudgie-dconf-dump