1. Identify the Workbook which contains the Old connection
2. Identify the Data Source which needs to be edited within the Workbook
3. Save the Data Source to an .XML file (.twbs) on a local file system
4. Open the .twbs file in a Notepad or Notepad++
5. Create an Excel spreadsheet with the original table names, column names and the corresponding new table and column names
6. Need to search the file for the “Old tables” names listed in the .twbs
a. Note down the line numbers or save the output in to an excel or ascii file
b. Edit the old columns names also in the entire file
c. Edit the join criteria with the right join condition (inner as opposed to full outer)
7. Upon completion of the changes, search for any old values if any
8. Open the .twbs in tableau desktop and ensure that there are no errors
9. Now open the workbook and replace the old datasource with new one.
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