diff --git a/src/cascadia/TerminalSettingsModel/CascadiaSettings.idl b/src/cascadia/TerminalSettingsModel/CascadiaSettings.idl
index 7f81dded89..1675a5151a 100644
--- a/src/cascadia/TerminalSettingsModel/CascadiaSettings.idl
+++ b/src/cascadia/TerminalSettingsModel/CascadiaSettings.idl
@@ -2,7 +2,6 @@
 // Licensed under the MIT license.
 
 import "GlobalAppSettings.idl";
-import "WindowSettings.idl";
 import "Profile.idl";
 import "TerminalWarnings.idl";
 import "DefaultTerminal.idl";
diff --git a/src/cascadia/TerminalSettingsModel/GlobalAppSettings.idl b/src/cascadia/TerminalSettingsModel/GlobalAppSettings.idl
index d48121043b..7755297dbe 100644
--- a/src/cascadia/TerminalSettingsModel/GlobalAppSettings.idl
+++ b/src/cascadia/TerminalSettingsModel/GlobalAppSettings.idl
@@ -85,4 +85,59 @@ namespace Microsoft.Terminal.Settings.Model
 
         Boolean ShouldUsePersistedLayout();
     }
+
+    [default_interface] runtimeclass WindowSettings
+    {
+        WindowSettings();
+
+        String Name { get; };
+        Guid DefaultProfile;
+
+        INHERITABLE_SETTING(String, UnparsedDefaultProfile);
+
+        INHERITABLE_SETTING(Int32, InitialRows);
+        INHERITABLE_SETTING(Int32, InitialCols);
+        INHERITABLE_SETTING(Boolean, AlwaysShowTabs);
+        INHERITABLE_SETTING(Boolean, ShowTabsFullscreen);
+        INHERITABLE_SETTING(NewTabPosition, NewTabPosition);
+        INHERITABLE_SETTING(Boolean, ShowTitleInTitlebar);
+        INHERITABLE_SETTING(Microsoft.UI.Xaml.Controls.TabViewWidthMode, TabWidthMode);
+        INHERITABLE_SETTING(Boolean, UseAcrylicInTabRow);
+        INHERITABLE_SETTING(Boolean, ShowTabsInTitlebar);
+        INHERITABLE_SETTING(String, WordDelimiters);
+        INHERITABLE_SETTING(Boolean, CopyOnSelect);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.CopyFormat, CopyFormatting);
+        INHERITABLE_SETTING(Boolean, WarnAboutLargePaste);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.WarnAboutMultiLinePaste, WarnAboutMultiLinePaste);
+        INHERITABLE_SETTING(Boolean, TrimPaste);
+        INHERITABLE_SETTING(LaunchPosition, InitialPosition);
+        INHERITABLE_SETTING(Boolean, CenterOnLaunch);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.DefaultInputScope, DefaultInputScope);
+        INHERITABLE_SETTING(LaunchMode, LaunchMode);
+        INHERITABLE_SETTING(Boolean, SnapToGridOnResize);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.GraphicsAPI, GraphicsAPI);
+        INHERITABLE_SETTING(Boolean, DisablePartialInvalidation);
+        INHERITABLE_SETTING(Boolean, SoftwareRendering);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.TextMeasurement, TextMeasurement);
+        INHERITABLE_SETTING(Microsoft.Terminal.Control.AmbiguousWidth, AmbiguousWidth);
+        INHERITABLE_SETTING(Boolean, UseBackgroundImageForWindow);
+        INHERITABLE_SETTING(Boolean, AlwaysOnTop);
+        INHERITABLE_SETTING(Boolean, AutoHideWindow);
+        INHERITABLE_SETTING(TabSwitcherMode, TabSwitcherMode);
+        INHERITABLE_SETTING(Boolean, DisableAnimations);
+        INHERITABLE_SETTING(String, StartupActions);
+        INHERITABLE_SETTING(Boolean, FocusFollowMouse);
+        INHERITABLE_SETTING(Boolean, ScrollToZoom);
+        INHERITABLE_SETTING(Boolean, ScrollToChangeOpacity);
+        INHERITABLE_SETTING(Boolean, TrimBlockSelection);
+        INHERITABLE_SETTING(Boolean, DetectURLs);
+        INHERITABLE_SETTING(Boolean, MinimizeToNotificationArea);
+        INHERITABLE_SETTING(Boolean, ShowAdminShield);
+        INHERITABLE_SETTING(IVector<NewTabMenuEntry>, NewTabMenu);
+        INHERITABLE_SETTING(Boolean, EnableShellCompletionMenu);
+        INHERITABLE_SETTING(Boolean, EnableUnfocusedAcrylic);
+        INHERITABLE_SETTING(String, SearchWebDefaultQueryUrl);
+        INHERITABLE_SETTING(IVector<String>, SafeUriSchemes);
+        INHERITABLE_SETTING(ThemePair, Theme);
+    }
 }
diff --git a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
index b9bffda2f7..bb9297f4b4 100644
--- a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
+++ b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj
@@ -83,7 +83,7 @@
       <DependentUpon>GlobalAppSettings.idl</DependentUpon>
     </ClInclude>
     <ClInclude Include="WindowSettings.h">
-      <DependentUpon>WindowSettings.idl</DependentUpon>
+      <DependentUpon>GlobalAppSettings.idl</DependentUpon>
     </ClInclude>
     <ClInclude Include="IInheritable.h" />
     <ClInclude Include="MTSMSettings.h" />
@@ -165,7 +165,7 @@
       <DependentUpon>GlobalAppSettings.idl</DependentUpon>
     </ClCompile>
     <ClCompile Include="WindowSettings.cpp">
-      <DependentUpon>WindowSettings.idl</DependentUpon>
+      <DependentUpon>GlobalAppSettings.idl</DependentUpon>
     </ClCompile>
     <ClCompile Include="KeyChordSerialization.cpp">
       <DependentUpon>KeyChordSerialization.idl</DependentUpon>
@@ -228,7 +228,6 @@
     <Midl Include="Command.idl" />
     <Midl Include="DefaultTerminal.idl" />
     <Midl Include="GlobalAppSettings.idl" />
-    <Midl Include="WindowSettings.idl" />
     <Midl Include="Profile.idl" />
     <Midl Include="EnumMappings.idl" />
     <Midl Include="TerminalWarnings.idl" />
diff --git a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj.filters b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj.filters
index 9c20182e26..7185db7d0b 100644
--- a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj.filters
+++ b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.ModelLib.vcxproj.filters
@@ -106,7 +106,6 @@
     <Midl Include="ColorScheme.idl" />
     <Midl Include="Command.idl" />
     <Midl Include="GlobalAppSettings.idl" />
-    <Midl Include="WindowSettings.idl" />
     <Midl Include="Profile.idl" />
     <Midl Include="TerminalWarnings.idl" />
     <Midl Include="CascadiaSettings.idl" />
diff --git a/src/cascadia/TerminalSettingsModel/WindowSettings.idl b/src/cascadia/TerminalSettingsModel/WindowSettings.idl
deleted file mode 100644
index e7d36956e8..0000000000
--- a/src/cascadia/TerminalSettingsModel/WindowSettings.idl
+++ /dev/null
@@ -1,65 +0,0 @@
-// Copyright (c) Microsoft Corporation.
-// Licensed under the MIT license.
-
-#include "IInheritable.idl.h"
-
-import "GlobalAppSettings.idl";
-import "NewTabMenuEntry.idl";
-
-namespace Microsoft.Terminal.Settings.Model
-{
-    [default_interface] runtimeclass WindowSettings
-    {
-        WindowSettings();
-
-        String Name { get; };
-        Guid DefaultProfile;
-
-        INHERITABLE_SETTING(String, UnparsedDefaultProfile);
-
-        INHERITABLE_SETTING(Int32, InitialRows);
-        INHERITABLE_SETTING(Int32, InitialCols);
-        INHERITABLE_SETTING(Boolean, AlwaysShowTabs);
-        INHERITABLE_SETTING(Boolean, ShowTabsFullscreen);
-        INHERITABLE_SETTING(NewTabPosition, NewTabPosition);
-        INHERITABLE_SETTING(Boolean, ShowTitleInTitlebar);
-        INHERITABLE_SETTING(Microsoft.UI.Xaml.Controls.TabViewWidthMode, TabWidthMode);
-        INHERITABLE_SETTING(Boolean, UseAcrylicInTabRow);
-        INHERITABLE_SETTING(Boolean, ShowTabsInTitlebar);
-        INHERITABLE_SETTING(String, WordDelimiters);
-        INHERITABLE_SETTING(Boolean, CopyOnSelect);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.CopyFormat, CopyFormatting);
-        INHERITABLE_SETTING(Boolean, WarnAboutLargePaste);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.WarnAboutMultiLinePaste, WarnAboutMultiLinePaste);
-        INHERITABLE_SETTING(Boolean, TrimPaste);
-        INHERITABLE_SETTING(LaunchPosition, InitialPosition);
-        INHERITABLE_SETTING(Boolean, CenterOnLaunch);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.DefaultInputScope, DefaultInputScope);
-        INHERITABLE_SETTING(LaunchMode, LaunchMode);
-        INHERITABLE_SETTING(Boolean, SnapToGridOnResize);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.GraphicsAPI, GraphicsAPI);
-        INHERITABLE_SETTING(Boolean, DisablePartialInvalidation);
-        INHERITABLE_SETTING(Boolean, SoftwareRendering);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.TextMeasurement, TextMeasurement);
-        INHERITABLE_SETTING(Microsoft.Terminal.Control.AmbiguousWidth, AmbiguousWidth);
-        INHERITABLE_SETTING(Boolean, UseBackgroundImageForWindow);
-        INHERITABLE_SETTING(Boolean, AlwaysOnTop);
-        INHERITABLE_SETTING(Boolean, AutoHideWindow);
-        INHERITABLE_SETTING(TabSwitcherMode, TabSwitcherMode);
-        INHERITABLE_SETTING(Boolean, DisableAnimations);
-        INHERITABLE_SETTING(String, StartupActions);
-        INHERITABLE_SETTING(Boolean, FocusFollowMouse);
-        INHERITABLE_SETTING(Boolean, ScrollToZoom);
-        INHERITABLE_SETTING(Boolean, ScrollToChangeOpacity);
-        INHERITABLE_SETTING(Boolean, TrimBlockSelection);
-        INHERITABLE_SETTING(Boolean, DetectURLs);
-        INHERITABLE_SETTING(Boolean, MinimizeToNotificationArea);
-        INHERITABLE_SETTING(Boolean, ShowAdminShield);
-        INHERITABLE_SETTING(IVector<NewTabMenuEntry>, NewTabMenu);
-        INHERITABLE_SETTING(Boolean, EnableShellCompletionMenu);
-        INHERITABLE_SETTING(Boolean, EnableUnfocusedAcrylic);
-        INHERITABLE_SETTING(String, SearchWebDefaultQueryUrl);
-        INHERITABLE_SETTING(IVector<String>, SafeUriSchemes);
-        INHERITABLE_SETTING(ThemePair, Theme);
-    }
-}