diff --git a/I18N Commander/DataModel/Database/Common/DataContext.cs b/I18N Commander/DataModel/Database/Common/DataContext.cs
index 56284ab..e63c80d 100644
--- a/I18N Commander/DataModel/Database/Common/DataContext.cs	
+++ b/I18N Commander/DataModel/Database/Common/DataContext.cs	
@@ -69,10 +69,10 @@ public sealed class DataContext : DbContext, IDataContext
     #region Export and import
 
     private readonly record struct JsonData(
-        IEnumerable<JsonSetting> Settings,
-        IEnumerable<JsonSection> Sections,
-        IEnumerable<JsonTextElement> TextElements,
-        IEnumerable<JsonTranslation> Translations
+        IList<JsonSetting> Settings,
+        IList<JsonSection> Sections,
+        IList<JsonTextElement> TextElements,
+        IList<JsonTranslation> Translations
     );
 
     /// <summary>
@@ -160,10 +160,10 @@ public sealed class DataContext : DbContext, IDataContext
         await JsonSerializer.SerializeAsync(fileStream,  
             new JsonData
             {
-                Settings = this.Settings.Select(n => n.ToJsonSetting()),
-                Sections = this.Sections.Select(n => n.ToJsonSection()),
-                TextElements = this.TextElements.Select(n => n.ToJsonTextElement()),
-                Translations = this.Translations.Select(n => n.ToJsonTranslation()),
+                Settings = this.Settings.Select(n => n.ToJsonSetting()).ToList(),
+                Sections = this.Sections.Select(n => n.ToJsonSection()).ToList(),
+                TextElements = this.TextElements.Select(n => n.ToJsonTextElement()).ToList(),
+                Translations = this.Translations.Select(n => n.ToJsonTranslation()).ToList(),
             }, jsonSettings);
     }