How to transfer Project of Type A to Type B in Oracle Project Costing Module

Hi,

My user created a used a project of TYPE A, but realised that the nature of the project should be of TYPE B after the project has been in used for some years. The cost were incorrectly taken into the wrong account and the user want to correct it. He can able to do a manual journal to correct the cost a General Ledger Level but also want to correct the same at Project module so in the further he wants to costing to be taken up direct  into the right GL account and will not do manual journal.