Market Analyst 6 allows you to change the data source for any chart.  This is mainly used to update workbooks when you've changed from one data provider to another.

1.  Open the workbook.



2.  Right click on a bar on the chart.

3. From the Actions menu (running man icon) left click the Change Data File option.

4.  The Data File Selector window will open.  Navigate to the file you want to use and double click it.



5.  The source for the chart will be updated.



Note:  When changing data providers for some exchanges (like Foreign Exchange) there maybe slight variations in the high / low price.  While this will not effect dynamic tools like Moving Averages, static tools such as Trend Lines, etc may need to be re-adjusted once the source has been updated.