Issues with fillable form in Sign

I have a fillable form.  After all fillable sections are filled in, the form is filed down to my hard drive and then uploaded for electronic signature.  What I found is when I bring the form into Sign and sent to the signer for electronic signature, the fillable fields are still active.  Is there a way to add a fillable form into Sign without scanning it first.  The purpose of scanning first is to de-activate the fillable fields.   Is there a way to file the fillable form to de-activate the fillable field options?  I tried converting it to Word but the end result doesn't look pretty.   Thanks for any tips.