Avoiding repeated questions using AMC package

I’m trying to write a Latex source file to create my first exam in AMC. However, my Latex file is producing copies with repeated questions and I couldn’t find out how to solve that reading the official manual. I’d be very grateful if anyone could help me. Thanks in advance!

My MWE is:

documentclass[a4paper]{article}
usepackage[utf8x]{inputenc}
usepackage[T1]{fontenc}
usepackage{automultiplechoice} 

begin{document} 

setdefaultgroupmode{withoutreplacement} %I thought this could solve the problem!?

begin{examcopy}[10] 
cleargroup{finalgroup} 

element{group01}{
begin{question}{group01q01} Analysis
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

element{group01}{
begin{question}{group01q02} Algebra
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

element{group01}{
begin{question}{group01q03} Geometry
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

shufflegroup{group01} 
copygroup[2]{group01}{finalgroup} 

element{group02}{
begin{question}{group02q01} Verbs
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

element{group02}{
begin{question}{group02q02} Pronouns
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

element{group02}{
begin{question}{group02q03} Adjectives
    begin{choices} 
        correctchoice{Correct choice}
        wrongchoice{Wrong choice (1)}
        wrongchoice{Wrong choice (2)}
        wrongchoice{Wrong choice (3)}
    end{choices}
end{question}
}

shufflegroup{group02} 
copygroup[2]{group02}{finalgroup} 

shufflegroup{finalgroup}
insertgroup{finalgroup}

end{examcopy}
end{document}