Resolution

Create the new project code in Project Master then mass create accounts in the Account Mass Creation program.
This process will take any General Ledger account tied to the old project code and create new GL accounts with the same org/object and add the new project code to it.

Financials > General Ledger Menu > Set up/Chart of Accounts > Project Master

Financials > General Ledger Menu > Set up/Chart of Accounts >Account Mass Creation

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