We are migrating open projects from one OU to a new OU for which the Asset cost had been captitaliz

We are migrating open projects from one OU to a new OU for which the Asset cost  had been captitalized in old asset book. We need to bring this already capitalized expenditure item lines to the migrated project to identify the cost already capitalized from the project. But when we are running the PRC: Update Project summary amount process, the CIP cost is gettting updated for the expenditure lines already capitalized in old book. How can we prevent these old expenditure migrated migrated to be not picked again for CIP cost in new migrated project.