You can quickly make a library feature and place/add quickly in those files.
Typically, I'd say that Deepak is right. And depending on what version of DriveWorks you're using (Xpress, Solo or Pro, and for which release), that might still be the case.
However, recent releases of DriveWorks Pro (I'd recommend looking at 14.1, where some new specification tasks have been added) have included more functions to allow you to overwrite existing files when you release models. And the Data Management tool in DW Pro has, for quite some time, allowed you to find specific released models to mark them for regeneration manually. So, if you're using DW Pro, you have options (some old, some new) to regenerate files where you'd previously have to delete and re-specify them yourself.