Christina Phillips at Dynamics GP Land reminds us that GP support has macros that will run through Contracts and Vendors and save the default settings for a project. They are very handy if adding Project Accounting to an existing GP implementation.
Project Accounting Macros
Sales, Purchasing & InventoryDevelopment & Integration
Archived post from 2009. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.