Accessing User-Written Formats from Releases Earlier Than SAS 9.4

If you are using 64-bit SAS for Windows, you must use PROC CPORT and CIMPORT to convert. For more information about PROC CPORT and CIMPORT, see Base SAS Procedures Guide.
If you are using 32-bit SAS for Windows, and you want to migrate a SAS library, PROC MIGRATE is the recommended method.
Note: User-defined formats are stored as catalog entries.