Create package line of particular object type from package line of another object type

Hello Team, Customer is moving their code repository from CVS to GitHub and they use PPM as their deployment tool. We are creating new object types with GitHub related code. During this migration process from CVS to GitHub ,they would have already moved their code to QA using old object types which were for CVS. Now in order to move the code to Production they will have to use new object types (GitHub ones ) since CVS will no longer be available by then. So, they will have to recreate the package lines using new object types. Since the object types are different copy package/copy package lines option doesn't help. Just wanted to check ,if  is there any alternative to manually creating package lines for 100s of entities with new object types. We would have modified existing object types but we need to rollout this by each ERP , so we had to create new object types