Update connector-salesforce.md

Author: jonburchel

articles/data-factory/connector-salesforce.md

@@ -377,7 +377,7 @@ Here are steps that help you upgrade your linked service and related queries:
 
 1. Configure the connected apps in Salesforce portal by referring to [Prerequisites](connector-salesforce.md#prerequisites).
 
-1. Create a new Salesforce linked service and configure it by referring to [Linked service properties](connector-salesforce.md#linked-service-properties).  
+1. Create a new Salesforce linked service and configure it by referring to [Linked service properties](connector-salesforce.md#linked-service-properties). You also need to manually update existing datasets that rely on the old linked service, editing each dataset to use the new linked service instead. Pipeline activities that reference the updated datasets will automatically use the updated linked service reference, then.
 
 1. If you use SQL query in the copy activity source or the lookup activity that refers to the legacy linked service, you need to convert them to the SOQL query. Learn more about SOQL query from [Salesforce as a source type](connector-salesforce.md#salesforce-as-a-source-type) and [Salesforce Object Query Language (SOQL)](https://developer.salesforce.com/docs/atlas.en-us.soql_sosl.meta/soql_sosl/sforce_api_calls_soql.htm).