Example: from version 10.0.1 to tableau 9.3
From version 10.0.1 to tableau 9.1
We need to create twb file, if it is already a twb file the no need to make any change. If you have twbx then Unpackage the workbook by right click on Workbook and Select Unpackaged if workbook is packaged.
Next step is to open twb file in Notepad.
Select the file and right click on the twb file and select open with notepad
In notepad file Find the latest version i.e. 10.0.0 and replace with the version you want to be in
Example if you have tableau 10.0.0 and you want to convert into tableau 9.3 then find 10.0 in the notepad and replace with 9.3
There should be at least 3 instances where you have to replace the version in notepad.
Save the notepad file as it is.
You are done, now you can again right click on the twb file and select package workbook