diff --git a/Classes/Controller/LocalizationModuleController.php b/Classes/Controller/LocalizationModuleController.php
index e260c22..180cfba 100644
--- a/Classes/Controller/LocalizationModuleController.php
+++ b/Classes/Controller/LocalizationModuleController.php
@@ -126,6 +126,7 @@ public function initialize(ServerRequestInterface $request): void
         // @extensionScannerIgnoreLine
         $this->id = (int)($request->getQueryParams()['id'] ?? $request->getParsedBody()['id'] ?? 0);
         $this->srcPID = (int)($request->getQueryParams()['srcPID'] ?? $request->getParsedBody()['srcPID'] ?? 0);
+        $this->previewLanguage = (int)($request->getQueryParams()['export_xml_forcepreviewlanguage'] ?? $request->getParsedBody()['export_xml_forcepreviewlanguage'] ?? 0);
         $this->menuConfig();
     }
 
@@ -469,6 +470,7 @@ protected function excelExportImportAction(L10nConfiguration $l10nConfiguration)
         $importExcel = GeneralUtility::_POST('import_excel');
         $exportExcel = GeneralUtility::_POST('export_excel');
         $checkExports = GeneralUtility::_POST('check_exports') ?? false;
+        $export_xml_forcepreviewlanguage_only = GeneralUtility::_POST('export_xml_forcepreviewlanguage_only');
 
         if ($importAsDefaultLanguage) {
             $this->l10nBaseService->setImportAsDefaultLanguage(true);
@@ -510,7 +512,7 @@ protected function excelExportImportAction(L10nConfiguration $l10nConfiguration)
             if ($export_xml_forcepreviewlanguage > 0) {
                 $viewClass->setForcedSourceLanguage($export_xml_forcepreviewlanguage);
             }
-            if (GeneralUtility::_POST('export_xml_forcepreviewlanguage_only')) {
+            if ($export_xml_forcepreviewlanguage_only) {
                 $viewClass->setOnlyForcedSourceLanguage();
             }
             if ($this->MOD_SETTINGS['onlyChangedContent'] ?? false) {
@@ -581,6 +583,9 @@ protected function excelExportImportAction(L10nConfiguration $l10nConfiguration)
             'existingExportsOverview' => $existingExportsOverview,
             'isImport' => $isImport,
             'importSuccess' => $importSuccess,
+            'check_exports' => $checkExports,
+            'import_asdefaultlanguage' => $importAsDefaultLanguage,
+            'export_xml_forcepreviewlanguage_only' => $export_xml_forcepreviewlanguage_only,
             'previewLanguageMenu' => $this->makePreviewLanguageMenu(),
             'flashMessageHtml' => $flashMessageHtml,
             'internalFlashMessage' => $internalFlashMessage,
diff --git a/Classes/View/AbstractExportView.php b/Classes/View/AbstractExportView.php
index 859f9e2..e3bd21b 100644
--- a/Classes/View/AbstractExportView.php
+++ b/Classes/View/AbstractExportView.php
@@ -199,22 +199,23 @@ public function setFilename(): void
             $fileType = 'catxml';
         }
 
-        $sourceLanguageId = $this->l10ncfgObj->getForcedSourceLanguage() ?: 0;
-        $sourceLanguageConfiguration = $this->site->getAvailableLanguages($this->getBackendUser())[$sourceLanguageId] ?? null;
+        $sourceLanguageId = $this->forcedSourceLanguage ?: 0;
+        try {
+            $sourceLanguageConfiguration = $this->site->getLanguageById($sourceLanguageId);
+        } catch(\InvalidArgumentException $e) {
+            $sourceLanguageConfiguration = null;
+        }
         if ($sourceLanguageConfiguration instanceof SiteLanguage) {
-            if ($this->typo3Version->getMajorVersion() < 12) {
-                $sourceLang = $sourceLanguageConfiguration->getLocale() ?: $sourceLanguageConfiguration->getTwoLetterIsoCode();
-            } else {
-                $sourceLang = $sourceLanguageConfiguration->getLocale()->getName() ?: $sourceLanguageConfiguration->getLocale()->getLanguageCode();
-            }
+            $sourceLang = $sourceLanguageConfiguration->getHreflang();
+        }
+        try {
+            $targetLanguageConfiguration = $this->site->getLanguageById($this->targetLanguage);
+        } catch(\InvalidArgumentException $e) {
+            $targetLanguageConfiguration = null;
         }
         $targetLanguageConfiguration = $this->site->getAvailableLanguages($this->getBackendUser())[$this->targetLanguage] ?? null;
         if ($targetLanguageConfiguration instanceof SiteLanguage) {
-            if ($this->typo3Version->getMajorVersion() < 12) {
-                $targetLang = $targetLanguageConfiguration->getLocale() ?: $targetLanguageConfiguration->getTwoLetterIsoCode();
-            } else {
-                $targetLang = $targetLanguageConfiguration->getLocale()->getName() ?: $targetLanguageConfiguration->getLocale()->getLanguageCode();
-            }
+            $targetLang = $targetLanguageConfiguration->getHreflang();
         }
         if ($sourceLang !== '' && $targetLang !== '') {
             $fileNamePrefix = (trim($this->l10ncfgObj->getFileNamePrefix())) ? $this->l10ncfgObj->getFileNamePrefix() . '_' . $fileType : $fileType;
diff --git a/Classes/View/CatXmlView.php b/Classes/View/CatXmlView.php
index 8891ae8..9717a12 100644
--- a/Classes/View/CatXmlView.php
+++ b/Classes/View/CatXmlView.php
@@ -71,7 +71,27 @@ public function render(): string
             if (empty($page['items'])) {
                 continue;
             }
+            // Build a source URL that reflects the requested source language (forcedSourceLanguage)
+            // instead of always using the default language
             $url = $page['header']['url'] ?? '';
+            if (!empty($this->forcedSourceLanguage)) {
+                // For TYPO3 v12+, enforce language via special _language parameter with SiteLanguage,
+                // not by appending L (which can be ignored by routing)
+                try {
+                    if ($this->typo3Version->getMajorVersion() >= 12) {
+                        $siteLanguage = $this->site->getLanguageById((int)$this->forcedSourceLanguage);
+                        if ($siteLanguage instanceof SiteLanguage) {
+                            // Pass SiteLanguage via reserved _language parameter so router can build the language-specific URL
+                            $url = (string)$this->site->getRouter()->generateUri((int)$pId, ['_language' => $siteLanguage]);
+                        }
+                    } else {
+                        // Fallback for older TYPO3 versions: use L parameter
+                        $url = (string)$this->site->getRouter()->generateUri((int)$pId, ['L' => (int)$this->forcedSourceLanguage]);
+                    }
+                } catch (\Throwable $e) {
+                    // Keep $url from header as fallback if generation fails for any reason
+                }
+            }
             $output[] = "\t" . '<pageGrp id="' . $pId . '" sourceUrl="' . $url . '">' . "\n";
             foreach ($page['items'] as $table => $elements) {
                 foreach ($elements as $elementUid => $data) {
diff --git a/Resources/Private/Partials/LocalizationModule/Modules/ExportExcel.html b/Resources/Private/Partials/LocalizationModule/Modules/ExportExcel.html
index bf9b0d1..44aa0bc 100644
--- a/Resources/Private/Partials/LocalizationModule/Modules/ExportExcel.html
+++ b/Resources/Private/Partials/LocalizationModule/Modules/ExportExcel.html
@@ -9,7 +9,7 @@
                 <div class="form-group mb-2">
                     <div class="checkbox">
                         <label>
-                            <input type="checkbox" value="1" name="check_exports" />
+                            <input type="checkbox" value="1" name="check_exports" {f:if(condition:'{moduleContent.check_exports}',then:'checked="checked"')}/>
                             <f:translate key="{lll}export.xml.check_exports.title" />
                         </label>
                     </div>
@@ -17,7 +17,7 @@
                 <div class="form-group mb-2">
                     <div class="checkbox">
                         <label>
-                            <input type="checkbox" value="1" name="import_asdefaultlanguage" />
+                            <input type="checkbox" value="1" name="import_asdefaultlanguage" {f:if(condition:'{moduleContent.import_asdefaultlanguage}',then:'checked="checked"')}/>
                             <f:translate key="{lll}import.xml.asdefaultlanguage.title"/>
                         </label>
                     </div>
@@ -42,7 +42,7 @@
                                     <input type="checkbox" value="1" name="export_xml_forcepreviewlanguage_only" checked="checked" disabled="disabled" />
                                 </f:then>
                                 <f:else>
-                                    <input type="checkbox" value="1" name="export_xml_forcepreviewlanguage_only" />
+                                    <input type="checkbox" value="1" name="export_xml_forcepreviewlanguage_only" {f:if(condition:'{moduleContent.export_xml_forcepreviewlanguage_only}',then:'checked="checked"')} />
                                 </f:else>
                             </f:if>
                             <f:translate key="{lll}export.xml.source-language-only.title"/>