diff --git a/BismNormalizer/BismNormalizer/TabularCompare/ComparisonFactory.cs b/BismNormalizer/BismNormalizer/TabularCompare/ComparisonFactory.cs
index d96c2d3..33e3bbf 100644
--- a/BismNormalizer/BismNormalizer/TabularCompare/ComparisonFactory.cs
+++ b/BismNormalizer/BismNormalizer/TabularCompare/ComparisonFactory.cs
@@ -171,6 +171,7 @@ namespace BismNormalizer.TabularCompare
                     if (comparisonInfo.Interactive && 
                         !comparisonInfo.ConnectionInfoTarget.UseProject && //Upgrade in SSDT not supported
                         !comparisonInfo.ConnectionInfoTarget.UseDesktop && //Upgrade via port number to Desktop or SSDT not supported
+                        !comparisonInfo.ConnectionInfoTarget.UseBimFile && //Upgrade to offline file not (currently) supported
                         System.Windows.Forms.MessageBox.Show(
                     message + $"\nDo you want to upgrade the target to {Convert.ToString(comparisonInfo.SourceCompatibilityLevel)} and allow the comparison?", comparisonInfo.AppName, System.Windows.Forms.MessageBoxButtons.YesNo, System.Windows.Forms.MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
                     {
diff --git a/BismNormalizer/BismNormalizer/TabularCompare/TabularMetadata/TabularModel.cs b/BismNormalizer/BismNormalizer/TabularCompare/TabularMetadata/TabularModel.cs
index e4dfb21..152c916 100644
--- a/BismNormalizer/BismNormalizer/TabularCompare/TabularMetadata/TabularModel.cs
+++ b/BismNormalizer/BismNormalizer/TabularCompare/TabularMetadata/TabularModel.cs
@@ -234,8 +234,6 @@ namespace BismNormalizer.TabularCompare.TabularMetadata
 
         private void InitializeCalcDependenciesFromM()
         {
-            //TODO: Doesn't deal with structured data sources (DSRs) yet
-
             _calcDependencies.Clear();
             List<MObject> mObjects = new List<MObject>();
 
diff --git a/BismNormalizer/BismNormalizer/TabularCompare/UI/ConnectionsAlmt.cs b/BismNormalizer/BismNormalizer/TabularCompare/UI/ConnectionsAlmt.cs
index 89cc7d0..76a738c 100644
--- a/BismNormalizer/BismNormalizer/TabularCompare/UI/ConnectionsAlmt.cs
+++ b/BismNormalizer/BismNormalizer/TabularCompare/UI/ConnectionsAlmt.cs
@@ -492,7 +492,7 @@ namespace BismNormalizer.TabularCompare.UI
         {
             OpenFileDialog ofd = new OpenFileDialog();
             ofd.InitialDirectory = (String.IsNullOrEmpty(Settings.Default.LastBimFileLocation) ? Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) : Settings.Default.LastBimFileLocation);
-            ofd.Filter = "PBIT files (.pbit)|*.pbit|BIM files (.bim)|*.bim|All files (*.*)|*.*";
+            ofd.Filter = "PBIT/BIM files (*.pbit;*.bim)|*.pbit;*.bim|All files (*.*)|*.*";
             ofd.Title = "Open";
             return ofd;
         }