diff --git a/packages/web/src/forms/FormCheckboxFieldRaw.svelte b/packages/web/src/forms/FormCheckboxFieldRaw.svelte
index b381e071e..ad9ffcae6 100644
--- a/packages/web/src/forms/FormCheckboxFieldRaw.svelte
+++ b/packages/web/src/forms/FormCheckboxFieldRaw.svelte
@@ -3,6 +3,7 @@
   import CheckboxField from './CheckboxField.svelte';
 
   export let name;
+  export let defaultValue;
 
   const { values, setFieldValue } = getFormContext();
   function handleChange(e) {
@@ -10,4 +11,4 @@
   }
 </script>
 
-<CheckboxField {...$$restProps} checked={$values[name]} on:change={handleChange} />
+<CheckboxField {...$$restProps} checked={$values[name] ?? defaultValue} on:change={handleChange} />
diff --git a/packages/web/src/impexp/ImportExportConfigurator.svelte b/packages/web/src/impexp/ImportExportConfigurator.svelte
index a70c83ace..aa9d818d6 100644
--- a/packages/web/src/impexp/ImportExportConfigurator.svelte
+++ b/packages/web/src/impexp/ImportExportConfigurator.svelte
@@ -74,10 +74,12 @@
   $: supportsPreview =
     !!findFileFormat($extensions, $values.sourceStorageType) || $values.sourceStorageType == 'archive';
 
-  $: handleChangePreviewSource($previewSource);
+  $: {
+    $values;
+    handleChangePreviewSource($previewSource);
+  }
 
   const handleChangePreviewSource = async source => {
-    console.log('SOURCE', source);
     if (source && supportsPreview) {
       const reader = await createPreviewReader($extensions, $values, source);
       if (previewReaderStore) previewReaderStore.set(reader);