Hi Li Kim,
Which locale is set on your Tableau Desktop. You can set it to be the US or UK by going to File-->Workbook Locale-->desired country.
Hope this helps!
That worked. I changed my workbook locale to English (US) and worked with very odd looking data because the mm/dd/yy dates showed up as dd/mm/yy, then published to the server where the data reverted back to the desired date format. The thumbnails of the workbook on the server show the odd-looking data but the actual screen showing the workbook dashboard is fine. Thanks. -- Li Kim