diff --git a/jsapp/js/components/formEditors.es6 b/jsapp/js/components/formEditors.es6
index 9e437e0be0..95483d698d 100644
--- a/jsapp/js/components/formEditors.es6
+++ b/jsapp/js/components/formEditors.es6
@@ -159,10 +159,33 @@ export class ProjectDownloads extends React.Component {
     dataInterface.getAssetExports(this.props.asset.uid).done((data)=>{
       if (data.count > 0) {
         data.results.reverse();
-        this.setState({exports: data.results});
+        let results = data.results.map(result => {
+          if (result.data) {
+            let lang = result.data.lang,
+                langDescription = lang;
+
+            // Backend now changes `_default` to `FormPack.constant.UNTRANSLATED` in `ExportTaskViewSet`.
+            // `FormPack.constant.UNTRANSLATED` constant equals `None`.
+            // Old exports can still have `_default` as value for `lang` though.
+            if (lang === '_default' || lang === null) {
+              langDescription = t('Default');
+            }
+            // Because `xml` can be a code for an existing language (https://en.wikipedia.org/wiki/Malaysian_Sign_Language),
+            // `_xml` is now sent to backend instead of `xml`.
+            // Backend also changes `_xml` to `FormPack.constant.UNSPECIFIED_TRANSLATION`
+            // `FormPack.constant.UNSPECIFIED_TRANSLATION` constant equals `False`.
+            else if (lang === '_xml' || lang === false) {
+              langDescription = t('XML values and headers');
+            }
+            result.data['lang_desc'] = langDescription;
+          }
+          return result;
+        });
+
+        this.setState({exports: results});
 
         // Start a polling Interval if there is at least one export is not yet complete
-        data.results.every((item) => {
+        results.every((item) => {
           if(item.status === 'created' || item.status === 'processing'){
             this.pollingInterval = setInterval(this.refreshExport, 4000, item.url);
             return false;
@@ -232,7 +255,7 @@ export class ProjectDownloads extends React.Component {
                           <label htmlFor='lang'>{t('Value and header format')}</label>
                           <select name='lang' value={this.state.lang}
                               onChange={this.langChange}>
-                            <option value='xml'>{t('XML values and headers')}</option>
+                            <option value='_xml'>{t('XML values and headers')}</option>
                             { translations.length < 2 &&
                               <option value='_default'>{t('Labels')}</option>
                             }
@@ -320,7 +343,7 @@ export class ProjectDownloads extends React.Component {
                           {formatTime(item.date_created)}
                         </bem.FormView__label>
                         <bem.FormView__label m='lang'>
-                        {item.data.lang === '_default' ? t('Default') : item.data.lang}
+                          {item.data.lang_desc}
                         </bem.FormView__label>
                         <bem.FormView__label m='include-groups'>
                           {item.data.hierarchy_in_labels === 'false' ? t('No') : t('Yes')}
diff --git a/kpi/models/import_export_task.py b/kpi/models/import_export_task.py
index dc5e819b27..bc5be724dd 100644
--- a/kpi/models/import_export_task.py
+++ b/kpi/models/import_export_task.py
@@ -20,6 +20,7 @@
 from django.utils.six.moves.urllib import parse as urlparse
 
 import formpack.constants
+from formpack.schema.fields import ValidationStatusCopyField
 from pyxform import xls2json_backends
 from formpack.utils.string import ellipsize
 from kobo.apps.reports.report_data import build_formpack
@@ -342,9 +343,11 @@ class ExportTask(ImportExportTask):
     `data` attribute to a dictionary with the following keys:
     * `type`: required; `xls` or `csv`
     * `source`: required; URL of a deployed `Asset`
-    * `lang`: optional; `xml` for XML names or the name of the language to be
-              used for labels. Leave unset, or use `_default` or `None`, for
-              labels in the default language
+    * `lang`: optional; It can be:
+        - unset (`None`) or `formpack.constants.UNTRANSLATED` for labels in the default language (default: `None`).
+        - `formpack.constants.UNSPECIFIED_TRANSLATION` for XML names.
+        - language code for labels in one of the translated language (e.g. `en` for English).
+
     * `hierarchy_in_labels`: optional; when `true`, include the labels for all
                              ancestor groups in each field label, separated by
                              `group_sep`. Defaults to `False`
@@ -375,7 +378,13 @@ class ExportTask(ImportExportTask):
     last_submission_time = models.DateTimeField(null=True)
     result = PrivateFileField(upload_to=export_upload_to, max_length=380)
 
-    COPY_FIELDS = ('_id', '_uuid', '_submission_time')
+    COPY_FIELDS = (
+        '_id',
+        '_uuid',
+        '_submission_time',
+        ValidationStatusCopyField
+    )
+
     TIMESTAMP_KEY = '_submission_time'
     # Above 244 seems to cause 'Download error' in Chrome 64/Linux
     MAXIMUM_FILENAME_LENGTH = 240
@@ -445,8 +454,6 @@ def _build_export_options(self, pack):
         group_sep = self.data.get('group_sep', '/')
         translations = pack.available_translations
         lang = self.data.get('lang', None) or next(iter(translations), None)
-        if lang == '_default':
-            lang = formpack.constants.UNTRANSLATED
         tag_cols_for_header = self.data.get('tag_cols_for_header', ['hxl'])
 
         return {
diff --git a/kpi/views.py b/kpi/views.py
index 25f32ceaa3..cbd05f5541 100644
--- a/kpi/views.py
+++ b/kpi/views.py
@@ -105,6 +105,7 @@
     ASSET_TYPE_TEMPLATE, ASSET_TYPE_SURVEY, ASSET_TYPES
 from deployment_backends.backends import DEPLOYMENT_BACKENDS
 from deployment_backends.mixin import KobocatDataProxyViewSetMixin
+from formpack.constants import UNTRANSLATED, UNSPECIFIED_TRANSLATION
 from kobo.apps.hook.utils import HookUtils
 from kpi.exceptions import BadAssetTypeException
 from kpi.utils.log import logging
@@ -560,6 +561,16 @@ def create(self, request, *args, **kwargs):
             opt_val = request.POST.get(opt, None)
             if opt_val is not None:
                 task_data[opt] = opt_val
+
+        # To be compliant with `ExportTask` docstring,
+        # override `lang` if needed.
+        lang = task_data.get("lang")
+        if lang == "_default":
+            lang = UNTRANSLATED
+        elif lang == "_xml":
+            lang = UNSPECIFIED_TRANSLATION
+        task_data["lang"] = lang
+
         # Complain if no source was specified
         if not task_data.get('source', False):
             raise exceptions.ValidationError(