I find this at USCIS website, it's a Q&A for National Stakeholder Meeting.
Found the Question 12:
Question: The USCIS recently announced changes in the filing procedures and fees for the filing of an I-131 (Refugee Travel Document). Asylees filing for a RTD must now submit an $80 biometric fee. Also, asylees who have a pending adjustment of status application (I-485) can submit their I-797 receipt showing the application is pending or they are currently filing the I-485 and do not have to pay the filing fee for the I-131. Please clarify whether asylees who have a pending I-485 (filed after July 30, 2007) still have to submit the $80 biometric fee and those who are concurrently filing the I-485 and the I-131 have to pay two biometrics fees.
Response: USCIS recently announced changes in the filing procedures and fees for the filing of an I-131, Refugee Travel Document (RTD). Asylees filing for a RTD must now submit an $80 biometric fee. However, if an asylee submits their I-797 receipt showing that they have pending I-485 application that was filed on or after 07/30/2007, then the applicant does not have to pay the filing fee or the biometric fee for the I-131. Thus, if the I-485 and I-131 are concurrently filed an additional biometric fee is not necessary for the I-131 application for an RTD.
So, I don't need pay BIO fee and filing fee?