What Bjorn means is that when we're pushing comments to, or importing comments from a bug on a remote tracker that has a Launchpad plugin installed, we can tell that bugtracker "Look, bug 9148 that you've got there is being tracked as bug #123456 in Launchpad" using the API provided by the plugin. We should be doing that whenever we interact with a remote bugtracker that has a plugin installed (assuming the link isn't already in place).
What Bjorn means is that when we're pushing comments to, or importing comments from a bug on a remote tracker that has a Launchpad plugin installed, we can tell that bugtracker "Look, bug 9148 that you've got there is being tracked as bug #123456 in Launchpad" using the API provided by the plugin. We should be doing that whenever we interact with a remote bugtracker that has a plugin installed (assuming the link isn't already in place).