Update task com.openexchange.groupware.update.tasks.ContactAdd VCardIdTask.ContactAddVCardIdTask() will add a new column 'vCardId' (VARCHAR(256) collate utf8_unicode_ci default NULL) to the prg_contacts table.

Update task com.openexchange.groupware.update.tasks.ContactAdd VCardIdToDelTask.ContactAddVCardIdToDelTask() will add related column to the del_contacts table.