With the immortal words of José, Jalapeño on a Stick: "ees eemposseeble, Séñor".
Only solution to my knowledge is to rewrite the AS2 file.
General notice: from now on, I would like to ask everyone to put [AS2] or [AS3] (corresponding to the version of actionscript you are using on your project) in front of their post titles when the question is actionscript related! Please help us help you faster. Thank you.