'See tracing' does not work

This is because the underlying authority browse methods (open-ils.supercat.authority.*) that we're using in the 2.0 authority interface displays only the 1xx fields for the records.

It would be relatively simple to register and use a variant authority browse method that searches and displays the 1xx and 4xx fields in the selection dialog, so that if you choose an entry for a 4xx field, it will show you the record with the matching 4xx but enable you to apply the proper 1xx and link the field from the bibliographic record to the authority record appropriately.

I _think_ we want to keep the existing authority browse methods in place so that we can scope the search to just 1xx entries.

You are right, we don’t want 4XX field in the selection dialogue. We want to be pointed to the right 1XX field, because you don’t always know what the choosen authority name is (of course it only works when you made a 4XX field in the authority record).
Just like the 1.6 works. See the attachment.

I addressed this back on January 4th, 2011 as part of http://svn.open-ils.org/trac/ILS/changeset/19112 - you will now see the "See from" entry in the authority context menu; then when you scroll to the right and choose "Apply full authority", the 1xx will be applied appropriately from that authority record.