Macro to scramble the data after reload of the dashboard

If you scramble data in your file and reload it, fresh data will be loaded and the fields will not be scrambled anymore.
There is no way to maintain scrambled fields after a reload, since you are loading new data.

Environment: QlikView, any version.

An option that you can use is setting up a trigger, calling a macro, on post reload, to scramble the data for you. 

With this option the data will be re-scrambled every reload.

Macro code:
Sub Scramble
ActiveDocument.ScrambleField "YOUR_FIELD",true
End Sub
 

To set a trigger, you will have to go to Document properties -> Triggers

Select OnPostReload option

Create a Run Macro action with the code above.

<Macros are not supported by Qlik>