Problem:

When a users visits his profile to edit his achievements, the pre-selected achievement's are not displayed but rather we are asked to select the achievements again from scratch.

Proposed Working:

When a user visits their profile to edit their achievements, instead of asking them to select their achievements from scratch, the system should automatically populate the three selection fields with the achievements that the user has previously selected. This would make it easier for the user to see their existing achievements and make any necessary changes.

Also as the user selects or deselects an achievement, the unlocked list should dynamically update and remove the already selected achievements.