You can migrate specs and catalogs from earlier versions to AutoCAD Plant 3D.
Catalog files from earlier versions must be migrated to the current version before they can be used. For example, if you have catalogs in C:\AutoCAD Plant 3D 2014 Content that you want to use in AutoCAD Plant 3D you can migrate them.
If you do not migrate catalogs that have been customized, you cannot update specs and may be unable to place components into the model.