if ($administration_project->id != 0) {
     // Existing project
     /********************************************/
     /*** First do the start date check series ***/
     /********************************************/
     if ($_POST['projects_start_date'] != $administration_project->start_date) {
         // Start date has changed
         if ($_POST['projects_start_date'] < $administration_project->start_date) {
             // Start date before original start date
             if ($_POST['question_er1'] == 'ASKED') {
                 if ($_POST['question_er1_answer'] == true) {
                     // Change employee-roles OK
                     if ($_POST['question_t1'] == 'ASKED') {
                         // Change tariffs_start_date OK or not (doesn't matter in this stage)
                     } else {
                         if (tep_not_null($administration_project->has_tariffs('tariffs_start_date', '=', tep_strftime(DATE_FORMAT_DATABASE, $administration_project->start_date)))) {
                             $_POST['question_t1'] = 'ASK';
                             break;
                         }
                     }
                 }
             } else {
                 if (tep_not_null($administration_project->has_employees_roles('employees_roles_start_date', '=', tep_strftime(DATE_FORMAT_DATABASE, $administration_project->start_date)))) {
                     $_POST['question_er1'] = 'ASK';
                     break;
                 }
             }
         } else {
             // Start date after original start date
             if (tep_not_null($administration_project->has_employees_roles('employees_roles_end_date', '<', tep_strftime(DATE_FORMAT_DATABASE, $_POST['projects_start_date'])))) {
                 $_POST['action'] = 'enter_data';