Not able to open the workbook attached.Please resend.
I couldn't open as the version of tableau i have is 9.1.
Do you mean when it is published it takes you to the wrong dashboard? Or is the action opening the dashboard in a new window? I've had actions open in new windows before but the action should take you to the correct dashboard.
I just tried uploading your workbook to a server myself and it became clear why your actions no longer work.
When you upload a workbook that uses actions, you need to enable the option 'Show sheets as tabs'.
I reuploaded your workbook and it worked, without the option enabled, it didn't work.