diff --git a/internal/client/gemini-web_client.go b/internal/client/gemini-web_client.go
index ea002380..3f7e0535 100644
--- a/internal/client/gemini-web_client.go
+++ b/internal/client/gemini-web_client.go
@@ -80,10 +80,9 @@ func (c *GeminiWebClient) unregisterClient(reason interfaces.UnregisterReason) {
 			util.RemoveCookieSnapshots(c.tokenFilePath)
 		}
 	case interfaces.UnregisterReasonAuthFileUpdated:
-		if c.snapshotManager != nil {
-			if err := c.snapshotManager.Persist(); err != nil {
-				log.Errorf("Failed to persist Gemini Web cookies for %s: %v", filepath.Base(c.tokenFilePath), err)
-			}
+		if c.snapshotManager != nil && c.tokenFilePath != "" {
+			log.Debugf("skipping Gemini Web snapshot flush because auth file was updated: %s", filepath.Base(c.tokenFilePath))
+			util.RemoveCookieSnapshots(c.tokenFilePath)
 		}
 	default:
 		// Flush cookie snapshot to main token file and remove snapshot
diff --git a/internal/client/qwen_client.go b/internal/client/qwen_client.go
index a6c4e156..74e2416a 100644
--- a/internal/client/qwen_client.go
+++ b/internal/client/qwen_client.go
@@ -525,8 +525,9 @@ func (c *QwenClient) unregisterClient(reason interfaces.UnregisterReason) {
 			util.RemoveCookieSnapshots(c.tokenFilePath)
 		}
 	case interfaces.UnregisterReasonAuthFileUpdated:
-		if err := c.snapshotManager.Persist(); err != nil {
-			log.Errorf("Failed to persist Qwen cookies for %s: %v", filepath.Base(c.tokenFilePath), err)
+		if c.tokenFilePath != "" {
+			log.Debugf("skipping Qwen snapshot flush because auth file was updated: %s", filepath.Base(c.tokenFilePath))
+			util.RemoveCookieSnapshots(c.tokenFilePath)
 		}
 	case interfaces.UnregisterReasonShutdown, interfaces.UnregisterReasonReload:
 		if err := c.snapshotManager.Flush(); err != nil {