Merge pull request #89675 from diberry/0925-qna-alterations

[Cogsvcs] QnA Maker - word alterations

Author: PRMerger6

articles/cognitive-services/QnAMaker/How-To/improve-knowledge-base.md

@@ -8,7 +8,7 @@ services: cognitive-services
 ms.service: cognitive-services
 ms.subservice: qna-maker
 ms.topic: conceptual
-ms.date: 09/11/2019
+ms.date: 09/24/2019
 ms.author: diberry
 ---
 
@@ -75,6 +75,8 @@ Active learning is off by default. Turn it on to see suggested questions. After
 
 ## Accept an active learning suggestion in the knowledge base
 
+Active Learning alters the Knowledge Base or Search Service after you approve the suggestion, then save and train. If you approve the suggestion it will be added as an alternate question.
+
 1. In order to see the suggested questions, on the **Edit** knowledge base page, select **View Options**, then select **Show active learning suggestions**. 
 
     [![On the Edit section of the portal, select Show Suggestions in order to see the active learning's new question alternatives.](../media/improve-knowledge-base/show-suggestions-button.png)](../media/improve-knowledge-base/show-suggestions-button.png#lightbox)
@@ -382,8 +384,15 @@ The `SuggestedQuestions` column is a JSON object of information of implicit, `au
 ]
 ```
 
+You can also use the download alterations API to review these alterations, using REST or any of the language-based SDKs:
+* [REST API](https://westus.dev.cognitive.microsoft.com/docs/services/5a93fcf85b4ccd136866eb37/operations/5ac266295b4ccd1554da75fc)
+* [.NET SDK](https://docs.microsoft.com/dotnet/api/microsoft.azure.cognitiveservices.knowledge.qnamaker.alterationsextensions.getasync?view=azure-dotnet)
+
+
 When you reimport this app, the active learning continues to collect information and recommend suggestions for your knowledge base. 
 
+
+
 ## Best practices
 
 For best practices when using active learning, see [Best practices](../Concepts/best-practices.md#active-learning).