I discovered today that the LUCENE Bugzilla issues are no longer there. For example, if you go to <https://issues.apache.org/jira/browse/LUCENE-30> and click on the "Bugzilla Id:" link <http://issues.apache.org/bugzilla/show_bug.cgi?id=7912>, the page that comes up says "Bug #7912 does not exist." I found this to be true for every old Bugzilla issue link I tried. I assume that this is not a mistake, but rather the planned finish to the issue migration from Bugzilla to JIRA.
The Changes.html generated from CHANGES.txt by changes2html.pl auto-linkifies the Bugzilla bugs mentioned in the text, so I guess the thing to do is just to remove the auto-linkification. Links to the JIRA issues cloned from the Bugzilla bugs are inserted after the Bugzilla bug IDs, so these issues will still be discoverable from Changes.html. Steve