diff --git a/src/features/terminal/shells/bash/bashStartup.ts b/src/features/terminal/shells/bash/bashStartup.ts
index db9be723..bbfb198c 100644
--- a/src/features/terminal/shells/bash/bashStartup.ts
+++ b/src/features/terminal/shells/bash/bashStartup.ts
@@ -5,7 +5,6 @@ import which from 'which';
 import { traceError, traceInfo, traceVerbose } from '../../../../common/logging';
 import { ShellConstants } from '../../../common/shellConstants';
 import { hasStartupCode, insertStartupCode, removeStartupCode } from '../common/editUtils';
-import { getShellIntegrationEnabledCache, isWsl, shellIntegrationForActiveTerminal } from '../common/shellUtils';
 import { ShellScriptEditState, ShellSetupState, ShellStartupScriptProvider } from '../startupProvider';
 import { BASH_ENV_KEY, BASH_OLD_ENV_KEY, BASH_SCRIPT_VERSION, ZSH_ENV_KEY, ZSH_OLD_ENV_KEY } from './bashConstants';
 
@@ -69,11 +68,6 @@ async function isStartupSetup(profile: string, key: string): Promise<ShellSetupS
     return ShellSetupState.NotSetup;
 }
 async function setupStartup(profile: string, key: string, name: string): Promise<boolean> {
-    const shellIntegrationEnabled = await getShellIntegrationEnabledCache();
-    if ((shellIntegrationEnabled || (await shellIntegrationForActiveTerminal(name, profile))) && !isWsl()) {
-        removeStartup(profile, key);
-        return true;
-    }
     const activationContent = getActivationContent(key);
     try {
         if (await fs.pathExists(profile)) {
diff --git a/src/features/terminal/shells/fish/fishStartup.ts b/src/features/terminal/shells/fish/fishStartup.ts
index 40de3e98..139e4497 100644
--- a/src/features/terminal/shells/fish/fishStartup.ts
+++ b/src/features/terminal/shells/fish/fishStartup.ts
@@ -6,7 +6,6 @@ import which from 'which';
 import { traceError, traceInfo, traceVerbose } from '../../../../common/logging';
 import { ShellConstants } from '../../../common/shellConstants';
 import { hasStartupCode, insertStartupCode, removeStartupCode } from '../common/editUtils';
-import { getShellIntegrationEnabledCache, isWsl, shellIntegrationForActiveTerminal } from '../common/shellUtils';
 import { ShellScriptEditState, ShellSetupState, ShellStartupScriptProvider } from '../startupProvider';
 import { FISH_ENV_KEY, FISH_OLD_ENV_KEY, FISH_SCRIPT_VERSION } from './fishConstants';
 
@@ -58,11 +57,6 @@ async function isStartupSetup(profilePath: string, key: string): Promise<boolean
 
 async function setupStartup(profilePath: string, key: string): Promise<boolean> {
     try {
-        const shellIntegrationEnabled = await getShellIntegrationEnabledCache();
-        if ((shellIntegrationEnabled || (await shellIntegrationForActiveTerminal('fish', profilePath))) && !isWsl()) {
-            removeFishStartup(profilePath, key);
-            return true;
-        }
         const activationContent = getActivationContent(key);
         await fs.mkdirp(path.dirname(profilePath));
 
diff --git a/src/features/terminal/shells/pwsh/pwshStartup.ts b/src/features/terminal/shells/pwsh/pwshStartup.ts
index 45bb33d5..7ad86f44 100644
--- a/src/features/terminal/shells/pwsh/pwshStartup.ts
+++ b/src/features/terminal/shells/pwsh/pwshStartup.ts
@@ -13,11 +13,8 @@ import { ShellConstants } from '../../../common/shellConstants';
 import { hasStartupCode, insertStartupCode, removeStartupCode } from '../common/editUtils';
 import {
     extractProfilePath,
-    getShellIntegrationEnabledCache,
-    isWsl,
     PROFILE_TAG_END,
     PROFILE_TAG_START,
-    shellIntegrationForActiveTerminal,
 } from '../common/shellUtils';
 import { POWERSHELL_ENV_KEY, POWERSHELL_OLD_ENV_KEY, PWSH_SCRIPT_VERSION } from './pwshConstants';
 
@@ -169,13 +166,6 @@ async function isPowerShellStartupSetup(shell: string, profile: string): Promise
 }
 
 async function setupPowerShellStartup(shell: string, profile: string): Promise<boolean> {
-    const shellIntegrationEnabled = await getShellIntegrationEnabledCache();
-
-    if ((shellIntegrationEnabled || (await shellIntegrationForActiveTerminal(shell, profile))) && !isWsl()) {
-        removePowerShellStartup(shell, profile, POWERSHELL_OLD_ENV_KEY);
-        removePowerShellStartup(shell, profile, POWERSHELL_ENV_KEY);
-        return true;
-    }
     const activationContent = getActivationContent();
 
     try {
diff --git a/src/features/terminal/terminalManager.ts b/src/features/terminal/terminalManager.ts
index 394cc8db..79e31769 100644
--- a/src/features/terminal/terminalManager.ts
+++ b/src/features/terminal/terminalManager.ts
@@ -142,20 +142,6 @@ export class TerminalManagerImpl implements TerminalManager {
                         this.shellSetup.clear();
                     }
                 }
-                if (e.affectsConfiguration('terminal.integrated.shellIntegration.enabled')) {
-                    traceInfo('Shell integration setting changed, invalidating cache');
-                    const updatedShellIntegrationSetting = await getShellIntegrationEnabledCache();
-                    if (!updatedShellIntegrationSetting) {
-                        const shells = new Set(
-                            terminals()
-                                .map((t) => identifyTerminalShell(t))
-                                .filter((t) => t !== 'unknown'),
-                        );
-                        if (shells.size > 0) {
-                            await this.handleSetupCheck(shells);
-                        }
-                    }
-                }
             }),
             onDidChangeWindowState((e) => {
                 this.hasFocus = e.focused;
@@ -185,27 +171,22 @@ export class TerminalManagerImpl implements TerminalManager {
                         );
 
                         if (shellIntegrationLikelyAvailable && !shouldUseProfileActivation(p.shellType)) {
-                            // Shell integration available and NOT in WSL - skip setup
-                            await p.teardownScripts();
+                            // Shell integration available and NOT in WSL - skip setup.
+                            // NOTE: We intentionally do NOT teardown scripts here. If the user stays in
+                            // shellStartup mode, be less aggressive about clearing profile modifications.
                             this.shellSetup.set(p.shellType, true);
                             traceVerbose(
-                                `Shell integration available for ${p.shellType} (not WSL), skipping prompt, and profile modification.`,
+                                `Shell integration likely available. Skipping setup of shell profile for ${p.shellType}.`,
                             );
                         } else {
-                            // WSL (regardless of integration) OR no shell integration - needs setup
+                            // WSL (regardless of integration) OR no/disabled shell integration - needs setup
                             this.shellSetup.set(p.shellType, false);
                             shellsToSetup.push(p);
                             traceVerbose(
-                                `Shell integration is NOT available. Shell profile for ${p.shellType} is not setup.`,
+                                `Shell integration is NOT available or disabled. Shell profile for ${p.shellType} is not setup.`,
                             );
                         }
                     } else if (state === ShellSetupState.Setup) {
-                        if (shellIntegrationLikelyAvailable && !shouldUseProfileActivation(p.shellType)) {
-                            await p.teardownScripts();
-                            traceVerbose(
-                                `Shell integration available for ${p.shellType}, removed profile script in favor of shell integration.`,
-                            );
-                        }
                         this.shellSetup.set(p.shellType, true);
                         traceVerbose(`Shell profile for ${p.shellType} is setup.`);
                     } else if (state === ShellSetupState.NotInstalled) {