After the signing of the new contract, lengthy negotiations began with the assistance of external advisors brought in with the support of the Asian Development Bank about the so-called "rate rebasing" for the period 2002-2007.
Usai penandatanganan kontrak baru, dengan bantuan penasihat luar berkat dukungan Bank Pembangunan Asia, negosiasi panjang untuk "penyesuaian harga" periode 2002-2007 dimulai.