Project global data includes enteprise global templates, enterprise resources and Project Server admin settings.
So If you want to migrate only global data from Project Server 20rprise 03 database, then follow the following instructions for modifying the migration configuration files comes with MS Project Professional installation:
MigrateAll= Leave this value empty.
[Project Names to Save] Do not enter any project names in this section
[Project names to Save and Publish] Do not enter any project names in this section.
Complete detail can be found below: