Hi Manish,
I reproduce the issue, but it isn't related to the PDF, and even happens if
you select a country border, save, and reload the page: then the Country
Border dropdown shows empty. This is caused by your action, and specifically
the "Set Control Value" expression. There, you essentially reset the field
if the dropdown has more than 1 item… hence the field showing empty when you
reload the page or generate the PDF. In that expression, instead of `()`, I
think you want to use something like `fr:control-string-value('control-2')`,
to keep the current value.
action.png <
http://discuss.orbeon.com/file/t119778/action.png>
You'll let me know if this works for you!