Widget problem when duplicating website

I recently duplicated my wordpress website , copied the files from one folder to the other , created a new database and import the .sql backup , edited the config file and when I run it : Surprise! The widget is dissapeared from newly estabilished site , but all the rest is ok! I checked the theme settings ( Mandigo ) and seems that the widget setting was unchecked ( they all were unchecked ) .I checked it and all was working fine .
My question is if you have any idea why those checkboxes were unchecked if I copied across all file and database?!

Thanks in advance!