Error or incorrect behavior with the setting 'Replace user-defined settings with group settings'

If the 'Replace user-defined settings with group settings' setting is set, the user-defined settings are always overwritten by the settings of the option group the user is a member of. If no settings are defined, or the user does not belong to an option group, the default settings are applied. User-defined settings are then also overwritten. If the user is a member of several option groups, the first setting that is defined for the first option group is applied.

Solution

A solution to prevent settings from being overwritten with default values is to assign each ELO Sync user to an option group when using the 'Replace user-defined settings with group settings' option.