Migrate users to shield

Hello,

I am using migrations to insert users from another application to shield users table.
I need to preserve the previous id value and insert it as the current id.
shield will not allow me to replace the primary key id with current value.

I cannot get this to work.

Code:

$user = new User([
                "id" => $row->id, // Previous id from other database table
  ]);
$model = new UserModel;
            $model->save($user);

            $user = $model->findById($model->getInsertID());
            $user->activate();