I found bug in Conditional Profile Fields for BuddyPress plugin.

foreach ( $related_fields['conditions'] as $condition ) {

// check if condition is matched.
if ( $this->is_match( $data, $condition['value'], $condition['operator'] ) ) {

// if visibility is set to hidden and condition matched,
// delete data for the field on which this condition is applied.
if ( $condition['visibility'] === 'hide' ) {
xprofile_delete_field_data( $condition['field_id'], $user_id );
}
} else {
// if there is no match and the visibility is set to show on condition,
// we still need to delete the data for the field on which this condition is applied.
if ( $condition['visibility'] === 'show' ) {
xprofile_delete_field_data( $condition['field_id'], $user_id );
}
}
}