Wright97 - Can you give me a little more info? What list could you not see them in until close/reopen?
If I go into switch port mapper, then decide to add a new SNMP credential, you can add the credential, but the only way it'll show up in the drop down list is to close the app and come back into switch port mapper.
We are aware of this issue. The fix will be available in the next drop. As a current work-around you can close switch port mapper and re-open it to get the credential list to refresh. You do not have to close the application to force the credential refresh.