<comment>Conditional foreign key to civicrm_contribution_recur id. Each membership in connection with a recurring contribution carries a foreign key to the recurring contribution record. This assumes we can track these processor initiated events.</comment>
<type>int unsigned</type>
<export>true</export>
<comment>Conditional foreign key to civicrm_contribution_recur id. Each membership in connection with a recurring contribution carries a foreign key to the recurring contribution record. This assumes we can track these processor initiated events.</comment>