What is wrong with this association ? Related data are not being fetched - cakephp

Question

function export(){
ini_set('memory_limit', '256M');
$this->loadModel('Profile');
$this->loadModel('ExamPayment');
//$this->loadModel('ExamApplication');
//$clemrep = $this->ExamApplication->find('all');
$ufacid = Authcomponent::user('faculty_id');
$options = array( 'conditions' => array('ExamPayment.status' => "Successful",'ExamPayment.faculty_id'=> $ufacid) );
$this->ExamPayment->Behaviors->load('Containable');
$this->ExamPayment->contain(
array('User'=>array('Profile'),'Exam','Faculty','ExamApplication')
);
$examApps = $this->ExamPayment->find('all', $options, array('contain'=>
'ExamApplication'
));
$examApplications = array();
foreach ($examApps as $key => $examApplication) {
$fname = isset($examApplication['User']['Profile']['fname'])? trim($examApplication['User']['Profile']['fname'] ):null;
$lname = isset($examApplication['User']['Profile']['lname'])? trim($examApplication['User']['Profile']['lname'] ):null;
$phone = isset($examApplication['User']['Profile']['phone'])? trim($examApplication['User']['Profile']['phone'] ):null;
$gender = isset($examApplication['User']['Profile']['gender'])? trim($examApplication['User']['Profile']['gender'] ):null;
$nationality = isset($examApplication['User']['Profile']['nationality'])? trim($examApplication['User']['Profile']['nationality'] ):null;
//$adddress = isset($examApplication['User']['Profile']['adddress'])? trim($examApplication['User']['Profile']['adddress'] ):null;
//$dob = isset($examApplication['User']['Profile']['dob'])? trim($examApplication['User']['Profile']['dob'] ):null;
$examApplications[] = array(
'ExamApplication' => array(
'full_name' => $fname . ' ' . $lname,
'email' => $examApplication['User']['email'],
'phone' => $phone,
//'adddress' => $adddress,
//'date_of_birth' => $dob,
'gender' => $examApplication['User']['Profile']['gender'],
'nationality' => $examApplication['User']['Profile']['nationality'],
// 'state' => $examApplication['User']['Profile']['state'],
//'ref_number' => $examApplication['ExamApplication']['ref_number'],
//'role' => $examApplication['User']['role'],
'exam' => $examApplication['Exam']['exam'],
//'init' => $examApplication['Exam']['init'],
'code' => $examApplication['Faculty']['code'],
'med_school' => $examApplication['ExamApplication']['med_school'],
'med_school_address' => $examApplication['ExamApplication']['med_school_address'],
'med_school_year' => $examApplication['ExamApplication']['med_school_year'],
'med_board_year' => $examApplication['ExamApplication']['med_board_year'],
'discharge_year' => $examApplication['ExamApplication']['discharge_year'],
'discharge_type' => $examApplication['ExamApplication']['discharge_type'],
'exam_date' => $examApplication['ExamApplication']['exam_date'],
'exam_center' => $examApplication['ExamApplication']['exam_center'],
//'exam_fee' => $examApplication['ExamPayment']['exam_fee'],
'status' => $examApplication['ExamPayment']['status'],
)
);
}
//pr($clemrep);
pr($examApplications);
exit();
$this->set(compact('examApplications'));
$this->layout = null;
$this->autoLayout = false;
Configure::write('debug','0');
}[attached is the output i get][1]
Below is the ouput of the array, my question is, why are some value blank?
Array
(
[0] => Array
(
[ExamApplication] => Array
(
[full_name] => FRANK CHIDI NWANKPA
[email] => franknwankpa#gmail.com
[phone] => 07030940000
[gender] => Male
[nationality] => NG
[exam] => Primary
[code] => 205
[med_school] =>
[med_school_address] =>
[med_school_year] =>
[med_board_year] =>
[discharge_year] =>
[discharge_type] =>
[exam_date] =>
[exam_center] =>
[status] => Successful
)
)
[1] => Array
(
[ExamApplication] => Array
(
[full_name] => BANKOLE ARAFAT ABOSEDE
[email] => bankolearafat#gmail.com
[phone] => 08062683798
[gender] => Female
[nationality] => NG
[exam] => Primary
[code] => 205
[med_school] =>
[med_school_address] =>
[med_school_year] =>
[med_board_year] =>
[discharge_year] =>
[discharge_type] =>
[exam_date] =>
[exam_center] =>
[status] => Successful
)
)
[2] => Array
(
[ExamApplication] => Array
(
[full_name] => Uvieroghene Ogbebor
[email] => uvieo#yahoo.com
[phone] => 08038975401
[gender] => Male
[nationality] => NG
[exam] => Primary
[code] => 205
[med_school] =>
[med_school_address] =>
[med_school_year] =>
[med_board_year] =>
[discharge_year] =>
[discharge_type] =>
[exam_date] =>
[exam_center] =>
[status] => Successful
)
)
why are some values blank, i found out that the content of the "ExamApplication" model is not being displayed , however, the model has already been loaded.
What could be happening?
Please help me