CTRL+Q performs a complete reconstruction of all functions of the part or assembly.
EDIT: as for the problem of the symmetrical part, it is preferable, once the symmetrical part has been created by configuration of the original part, to remove the function that was used to create it in the assembly and to reimport the said part a second time, if you need the 2 configs at the same time, but in the symmetric configuration.
I finally created the symmetrical pieces myself, it was easier.
When I was in my symmetrical parts, the configurations of the original part appeared well but when I changed the configuration the part did not change.