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';
         $error_level = 7;
         // MR end date before new start date
         break;
     } else {
         if (tep_not_null($administration_project->has_employees_roles('employees_roles_start_date', '<', tep_strftime(DATE_FORMAT_DATABASE, $_POST['projects_start_date']), 'AND', 'employees_roles_end_date', '>=', tep_strftime(DATE_FORMAT_DATABASE, $_POST['projects_start_date'])))) {
             $_POST['question_er1_answer'] = true;
             // Employees-Roles start date will change