LDAP config: "Select Attribute Types" button does not work on R5 server

I have two servers, one is ND6 and the other is R5 (directory has been updated with ND6 design template). I use Domino Admin 6 to manage both servers. I am trying to manage the LDAP configuration in the server config document on my R5.

When I click the ‘Select Attribute Types’ button, it comes back with an error message:

The Domino LDAP Schema database (schema.nsf) was not found.

I check my R5 server - there is a Domino LDAP Schema database, but the filename is schema50.nsf! This file is created automatically when we run the ‘Tell LDAP exportschema’ command.

Shouldn’t the “Select Attribute Types” button recognize both schema.nsf and schema50.nsf for backward compatibility?