diff --git a/eeschema/sch_edit_frame.cpp b/eeschema/sch_edit_frame.cpp
index ce23080ba1..a255857c1c 100644
--- a/eeschema/sch_edit_frame.cpp
+++ b/eeschema/sch_edit_frame.cpp
@@ -1231,16 +1231,20 @@ void SCH_EDIT_FRAME::AddItemToScreenAndUndoList( SCH_SCREEN* aScreen, SCH_ITEM*
 
 void SCH_EDIT_FRAME::UpdateTitle()
 {
+    SCH_SCREEN* screen = GetScreen();
+
+    wxCHECK( screen, /* void */ );
+
     wxString title;
 
-    if( !GetScreen()->GetFileName().IsEmpty() )
+    if( !screen->GetFileName().IsEmpty() )
     {
-        wxFileName fn( Prj().AbsolutePath( GetScreen()->GetFileName() ) );
+        wxFileName fn( Prj().AbsolutePath( screen->GetFileName() ) );
         bool       readOnly = false;
         bool       unsaved = false;
 
-        if( fn.IsOk() && fn.FileExists() )
-            readOnly = !fn.IsFileWritable();
+        if( fn.IsOk() && screen->FileExists() )
+            readOnly = screen->IsReadOnly();
         else
             unsaved = true;
 
diff --git a/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp b/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
index 4dfff1788b..d3b24822dc 100644
--- a/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
+++ b/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
@@ -519,6 +519,9 @@ void SCH_SEXPR_PLUGIN::loadHierarchy( SCH_SHEET* aSheet )
                 m_error += ioe.What();
             }
 
+            aSheet->GetScreen()->SetFileReadOnly( !fileName.IsFileWritable() );
+            aSheet->GetScreen()->SetFileExists( true );
+
             // This was moved out of the try{} block so that any sheets definitionsthat
             // the plugin fully parsed before the exception was raised will be loaded.
             for( SCH_ITEM* aItem : aSheet->GetScreen()->Items().OfType( SCH_SHEET_T ) )
@@ -594,6 +597,8 @@ void SCH_SEXPR_PLUGIN::Save( const wxString& aFileName, SCH_SHEET* aSheet, SCHEM
     m_out = &formatter;     // no ownership
 
     Format( aSheet );
+
+    aSheet->GetScreen()->SetFileExists( true );
 }
 
 
diff --git a/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp b/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
index 2121711491..5e74497c72 100644
--- a/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
+++ b/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
@@ -744,6 +744,9 @@ void SCH_LEGACY_PLUGIN::loadHierarchy( SCH_SHEET* aSheet )
                 m_error += ioe.What();
             }
 
+            aSheet->GetScreen()->SetFileReadOnly( !fileName.IsFileWritable() );
+            aSheet->GetScreen()->SetFileExists( true );
+
             for( auto aItem : aSheet->GetScreen()->Items().OfType( SCH_SHEET_T ) )
             {
                 wxCHECK2( aItem->Type() == SCH_SHEET_T, continue );
@@ -1864,6 +1867,7 @@ std::shared_ptr<BUS_ALIAS> SCH_LEGACY_PLUGIN::loadBusAlias( LINE_READER& aReader
     {
         buf.clear();
         parseUnquotedString( buf, aReader, line, &line, true );
+
         if( buf.Len() > 0 )
         {
             busAlias->AddMember( buf );
@@ -1895,6 +1899,8 @@ void SCH_LEGACY_PLUGIN::Save( const wxString& aFileName, SCH_SHEET* aSheet, SCHE
     m_out = &formatter;     // no ownership
 
     Format( aSheet );
+
+    aSheet->GetScreen()->SetFileExists( true );
 }
 
 
diff --git a/eeschema/sch_screen.cpp b/eeschema/sch_screen.cpp
index 8dabe8bcf1..e9ce910b3e 100644
--- a/eeschema/sch_screen.cpp
+++ b/eeschema/sch_screen.cpp
@@ -66,7 +66,9 @@
 SCH_SCREEN::SCH_SCREEN( EDA_ITEM* aParent ) :
     BASE_SCREEN( aParent, SCH_SCREEN_T ),
     m_fileFormatVersionAtLoad( 0 ),
-    m_paper( wxT( "A4" ) )
+    m_paper( wxT( "A4" ) ),
+    m_isReadOnly( false ),
+    m_fileExists( false )
 {
     m_modification_sync = 0;
     m_refCount = 0;
diff --git a/eeschema/sch_screen.h b/eeschema/sch_screen.h
index 9e2a4fc617..7e998becdc 100644
--- a/eeschema/sch_screen.h
+++ b/eeschema/sch_screen.h
@@ -144,6 +144,12 @@ public:
 
     const wxString& GetFileName() const                     { return m_fileName; }
 
+    void SetFileReadOnly( bool aIsReadOnly )                { m_isReadOnly = aIsReadOnly; }
+    bool IsReadOnly() const                                 { return m_isReadOnly; }
+
+    void SetFileExists( bool aFileExists )                  { m_fileExists = aFileExists; }
+    bool FileExists() const                                 { return m_fileExists; }
+
     const wxPoint& GetAuxOrigin() const                     { return m_aux_origin; }
     void SetAuxOrigin( const wxPoint& aPosition )           { m_aux_origin = aPosition; }
 
@@ -512,6 +518,11 @@ private:
     bool        m_zoomInitialized;          // Set to true once the zoom value is initialized with
                                             // `InitZoom()`.
 
+    bool        m_isReadOnly;               ///< Read only status of the screen file.
+
+    ///< Flag to indicate the file associated with this screen has been created.
+    bool        m_fileExists;
+
     /// List of bus aliases stored in this screen.
     std::unordered_set< std::shared_ptr< BUS_ALIAS > > m_aliases;