When you enter one of your profiles and, for example, have a weapon (its variant) selected in the top right corner, and then WITHIN THE SAME profile you select a different weapon, it automatically gets selected in the same variant that is also located in the top right. 


This even applies in cases where the weapon initially selected in the profile was in the purple segment; within this profile, I switch to another weapon, and it also gets selected in the purple segment, even though the new weapon is unlocked in relic quality.