diff --git a/src/configuration.ts b/src/configuration.ts
index c7f7549..27ee312 100644
--- a/src/configuration.ts
+++ b/src/configuration.ts
@@ -74,38 +74,35 @@ export class Configuration {
 
         if (inspection.globalValue !== undefined) {
             await this.update(to, migrationFn ? migrationFn(inspection.globalValue as TFrom) : inspection.globalValue, ConfigurationTarget.Global);
-            if (from !== to) {
-                try {
-                    await this.update(from, undefined, ConfigurationTarget.Global);
-                }
-                catch (ex) {
-                    debugger;
-                }
-            }
+            // Can't delete the old setting currently because it errors with `Unable to write to User Settings because <setting name> is not a registered configuration`
+            // if (from !== to) {
+            //     try {
+            //         await this.update(from, undefined, ConfigurationTarget.Global);
+            //     }
+            //     catch { }
+            // }
         }
 
         if (inspection.workspaceValue !== undefined) {
             await this.update(to, migrationFn ? migrationFn(inspection.workspaceValue as TFrom) : inspection.workspaceValue, ConfigurationTarget.Workspace);
-            if (from !== to) {
-                try {
-                    await this.update(from, undefined, ConfigurationTarget.Workspace);
-                }
-                catch (ex) {
-                    debugger;
-                }
-            }
+            // Can't delete the old setting currently because it errors with `Unable to write to User Settings because <setting name> is not a registered configuration`
+            // if (from !== to) {
+            //     try {
+            //         await this.update(from, undefined, ConfigurationTarget.Workspace);
+            //     }
+            //     catch { }
+            // }
         }
 
         if (inspection.workspaceFolderValue !== undefined) {
             await this.update(to, migrationFn ? migrationFn(inspection.workspaceFolderValue as TFrom) : inspection.workspaceFolderValue, ConfigurationTarget.WorkspaceFolder);
-            if (from !== to) {
-                try {
-                    await this.update(from, undefined, ConfigurationTarget.WorkspaceFolder);
-                }
-                catch (ex) {
-                    debugger;
-                }
-            }
+            // Can't delete the old setting currently because it errors with `Unable to write to User Settings because <setting name> is not a registered configuration`
+            // if (from !== to) {
+            //     try {
+            //         await this.update(from, undefined, ConfigurationTarget.WorkspaceFolder);
+            //     }
+            //     catch { }
+            // }
         }
     }
 
diff --git a/src/extension.ts b/src/extension.ts
index f24cdd4..0102ca5 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -1,7 +1,7 @@
 'use strict';
 import { Objects, Versions } from './system';
 import { commands, ConfigurationTarget, ExtensionContext, extensions, window, workspace } from 'vscode';
-import { CodeLensLanguageScope, CodeLensScopes, configuration, Configuration, IConfig } from './configuration';
+import { CodeLensLanguageScope, CodeLensScopes, configuration, Configuration, IConfig, OutputLevel } from './configuration';
 import { CommandContext, ExtensionKey, GlobalState, QualifiedExtensionId, setCommandContext } from './constants';
 import { Commands, configureCommands } from './commands';
 import { Container } from './container';
@@ -121,11 +121,6 @@ async function migrateSettings(context: ExtensionContext, previousVersion: strin
         }
 
         if (Versions.compare(previous, Versions.from(7, 5, 9)) !== 1) {
-            const section = configuration.name('advanced')('messages').value;
-            const messages = configuration.get<{ [key: string]: boolean }>(section);
-            messages[SuppressedMessages.WelcomeNotice] = false;
-            await configuration.update(section, messages, ConfigurationTarget.Global);
-
             await configuration.migrate('annotations.file.gutter.gravatars', configuration.name('blame')('avatars').value);
             await configuration.migrate('annotations.file.gutter.compact', configuration.name('blame')('compact').value);
             await configuration.migrate('annotations.file.gutter.dateFormat', configuration.name('blame')('dateFormat').value);
@@ -173,6 +168,16 @@ async function migrateSettings(context: ExtensionContext, previousVersion: strin
 
             await configuration.migrate('recentChanges.file.lineHighlight.locations', configuration.name('recentChanges')('highlight')('locations').value);
         }
+
+        if (Versions.compare(previous, Versions.from(8, 0, 0, 'beta2')) !== 1) {
+            const section = configuration.name('advanced')('messages').value;
+            const messages = configuration.get<{ [key: string]: boolean }>(section);
+            messages[SuppressedMessages.WelcomeNotice] = false;
+            await configuration.update(section, messages, ConfigurationTarget.Global);
+
+            await configuration.migrate<boolean, OutputLevel>('debug', configuration.name('outputLevel').value, v => v ? OutputLevel.Debug : configuration.get(configuration.name('outputLevel').value));
+            await configuration.migrate('debug', configuration.name('debug').value, v => undefined);
+        }
     }
     catch (ex) {
         Logger.error(ex, 'migrateSettings');