My brother raise the webform with corrected 5669e form. Explain them you mentioned in your all previous applications, and this is innocent error in hurry. Your case is so simple than mine. I forgot to put refusal in all my applications. And I informed them as I came to know about. So finally I became permanent resident after I show them my honesty. I hope you will satisfied with it. If you follow the instructions I gave you will be fine. Otherwise if they ask you then chances are very low. So provide the correct form with letter of explanation through the webform, you will be fine. Thanks.