diff --git a/grade/export/lib.php b/grade/export/lib.php
index 35ec41d3229..11fe75c514e 100644
--- a/grade/export/lib.php
+++ b/grade/export/lib.php
@@ -182,6 +182,13 @@ abstract class grade_export {
             $this->previewrows = $formdata->previewrows;
         }
 
+        if (isset($formdata->display)) {
+            $this->displaytype = $formdata->display;
+        }
+
+        if (isset($formdata->updatedgradesonly)) {
+            $this->updatedgradesonly = $formdata->updatedgradesonly;
+        }
     }
 
     /**
diff --git a/grade/export/ods/grade_export_ods.php b/grade/export/ods/grade_export_ods.php
index 1dd953f0335..ec81be8180f 100644
--- a/grade/export/ods/grade_export_ods.php
+++ b/grade/export/ods/grade_export_ods.php
@@ -21,6 +21,19 @@ class grade_export_ods extends grade_export {
 
     public $plugin = 'ods';
 
+    /**
+     * Constructor should set up all the private variables ready to be pulled
+     * @param object $course
+     * @param int $groupid id of selected group, 0 means all
+     * @param stdClass $formdata The validated data from the grade export form.
+     */
+    public function __construct($course, $groupid, $formdata) {
+        parent::__construct($course, $groupid, $formdata);
+
+        // Overrides.
+        $this->usercustomfields = true;
+    }
+
     /**
      * To be implemented by child classes
      */
diff --git a/grade/export/txt/grade_export_txt.php b/grade/export/txt/grade_export_txt.php
index 9a0b8add699..0a379c231ee 100644
--- a/grade/export/txt/grade_export_txt.php
+++ b/grade/export/txt/grade_export_txt.php
@@ -33,6 +33,9 @@ class grade_export_txt extends grade_export {
     public function __construct($course, $groupid, $formdata) {
         parent::__construct($course, $groupid, $formdata);
         $this->separator = $formdata->separator;
+
+        // Overrides.
+        $this->usercustomfields = true;
     }
 
     public function get_export_params() {
diff --git a/grade/export/txt/tests/behat/export.feature b/grade/export/txt/tests/behat/export.feature
index c47dbe9bd46..db0ba72ae52 100644
--- a/grade/export/txt/tests/behat/export.feature
+++ b/grade/export/txt/tests/behat/export.feature
@@ -16,23 +16,9 @@ Feature: I need to export grades as text
       | user | course | role |
       | teacher1 | C1 | editingteacher |
       | student1 | C1 | student |
-    And I log in as "teacher1"
-    And I follow "Course 1"
-    And I turn editing mode on
-    And I add a "Assignment" to section "1" and I fill the form with:
-      | Assignment name | Test assignment name |
-      | Description | Submit your online text |
-      | assignsubmission_onlinetext_enabled | 1 |
-    And I log out
-    And I log in as "student1"
-    And I follow "Course 1"
-    And I follow "Test assignment name"
-    When I press "Add submission"
-    And I set the following fields to these values:
-      | Online text | This is a submission |
-    And I press "Save changes"
-    Then I should see "Submitted for grading"
-    And I log out
+    And the following "activities" exist:
+      | activity | course | idnumber | name | intro | assignsubmission_onlinetext_enabled |
+      | assign | C1 | a1 | Test assignment name | Submit your online text | 1 |
     And I log in as "teacher1"
     And I follow "Course 1"
     And I follow "Grades"
@@ -51,3 +37,13 @@ Feature: I need to export grades as text
     And I should see "80.0"
     And I should not see "Course total"
     And I should not see "80.00"
+
+  @javascript
+  Scenario: Export grades as text using percentages
+    When I set the field "Grade report" to "Plain text file"
+    And I expand all fieldsets
+    And I set the field "Grade export display type" to "Percent"
+    And I click on "Course total" "checkbox"
+    And I press "Download"
+    Then I should see "Student,1"
+    And I should see "80.00 %"
diff --git a/grade/export/xls/grade_export_xls.php b/grade/export/xls/grade_export_xls.php
index f3fa6f6cc6c..a3c75bd9a8f 100644
--- a/grade/export/xls/grade_export_xls.php
+++ b/grade/export/xls/grade_export_xls.php
@@ -21,6 +21,19 @@ class grade_export_xls extends grade_export {
 
     public $plugin = 'xls';
 
+    /**
+     * Constructor should set up all the private variables ready to be pulled
+     * @param object $course
+     * @param int $groupid id of selected group, 0 means all
+     * @param stdClass $formdata The validated data from the grade export form.
+     */
+    public function __construct($course, $groupid, $formdata) {
+        parent::__construct($course, $groupid, $formdata);
+
+        // Overrides.
+        $this->usercustomfields = true;
+    }
+
     /**
      * To be implemented by child classes
      */