Does the form 8453 for certain attachments to the tax return still have to mailed in with the documents if I have already attached those documents to the return? The form instructions make it seem as if the attachment gets sent in with the e-filed return AND mailed in with this form.

If I don't need to mail Form 8453 in addition to attaching the pdf attachment, how do I keep the form from generating?

I have completed the E-File information portion of the required form and yet the 8453 remains in active forms.