<blockquote>
<blockquote>
<p>they used to be fairly common place.</p>
</blockquote>
<p>The current planet.osm has on the order of 55,000 empty relations. Most of them are probably people who ignore the JOSM warnings or failed imports.</p>
</blockquote>
<p>But you still haven't provided a link to a changeset containing one, which makes this a bit non-actionable.</p>

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