update FAQ

Author: mrbullwinkle

articles/cognitive-services/openai/faq.yml

@@ -98,7 +98,11 @@ sections:
           What are the SLAs for API responses in Azure OpenAI?
         answer:
           We don't have a defined API response time Service Level Agreement (SLA) at this time. The overall SLA for Azure OpenAI Service is the same as for other Azure Cognitive Services. For more information, see the Cognitive Services section of the [Service Level Agreements (SLA) for Online Services page](https://azure.microsoft.com/support/legal/sla/cognitive-services/v1_1/).  
-  
+      - question: | 
+          My customized model (fine-tuned model) deployment was deleted, why did this happen?
+        answer:
+          Deployed customized models (fine-tuned models) that are inactive for greater than 90 days will automatically have their deployments deleted. **The underlying fine-tuned model is retained and can be redeployed at any time**. Once a fine-tuned model is deployed, it will continue to incur an hourly hosting cost regardless of whether you're actively using the model. To learn more about planning and managing costs with Azure OpenAI, refer to our [cost management guide](/azure/cognitive-services/openai/how-to/manage-costs#base-series-and-codex-series-fine-tuned-models).
+
 additionalContent: |
 
   ## Next steps