When your application has updated the bound ABL data source object or another user has altered a record, your application needs to push those changes out to the bound UI control. Setting the ProBindingSource's AutoSync property to TRUE enables you to synchronize the data using certain ABL statements and methods that reopen or reposition a query. The synchronization is similar to what happens with a Browse widget.
If the AutoSync property is FALSE, you can use the ProBindingSource's Refresh methods to synchronize bound UI controls with the bound ABL data source object.