I am using sql server authentication and user i assigned permission also have login id and pass,I googled the term "orphan login and got this :

what do i need to do as i need the restore to commit the change to a single table structure + data .

I tryed the import but got error:

Violation of primary key constraints 'userid' .can not insert duplicate key in object 'usertb'

Kindly let me know and thanks