Facebook Graph returns a different id than saved using passport-facebook [duplicate]

I have an application where the user logs in using the facebook account, saving the id, name and email. I'm using link Here is the excerpt:

//Cria um usuario do facebook ou vincula a um usuario ja existente
UserSchema.statics.findOrCreateFaceBookUser = function(profile, done) {
    var User = this;
    User.findOne({
        'email': profile.emails[0].value
    }, function(err, user) {
        if (err) {
            throw err;
        }
        if (user) {
            user.facebook = {
                id: profile.id,
                email: profile.emails[0].value,
                name: profile.displayName
            };
            user.save(function(err) {
                if (err) {
                    return next(err);
                } else {
                   // done(null, user);
                }
            });
            done(null, user);
        } else {
            User.findOne({
                'facebook.id': profile.id
            }, function(err, user) {
                if (err) {
                    throw err;
                }
                //if (err) return done(err);
                if (user) {
                    done(null, user);
                } else {
                    User.create({
                        firstName:profile.name.givenName,
                        lastName:profile.name.familyName,
                        email: profile.emails[0].value,
                        gender:profile.gender,
                        image:"http://graph.facebook.com/"+profile.id+"/picture?type=normal",
                        facebook: {
                            id: profile.id,
                            email: profile.emails[0].value,
                            name: profile.displayName
                        }
                    }, function(err, user) {
                        if (err) {
                            throw err;
                        }
                        done(null, user);
                    });
                }
            });
        }

    });


};

The problem is that I need to look for facebook friends who are also using the application, but the id returned by facebook graph does not match what I'm persisting in the application.

link

Any ideas?