It would be handy if you could somehow export accepted certificates directly from Directory Studio. In current form you have to export certifications with keytool.exe, by doing something like this: keytool.exe -exportcert -alias 3a147b4d2243d94eaa55d41a6240286f6db07689 -rfc -keystore permanent.jks -file mycert.cer
One natural location for accessing this feature could be the "Certificate Validation" view on the "Preferences" window. In this view you can already view all the trusted certificates and manipulate them with "Add" and "Remove" buttons. It would be handy if there was a "Export" or "Save as" button for exporting the selected sertificate.
Another possible location for this new feature could be the "Certificate Viewer".
You'd probably need some way to choose whether or not to use the -rfc parameter of keytool.exe.