<p>Not doing that has some bad extra side effects, visible <a href="https://www.openstreetmap.org/way/739027745" rel="nofollow">here</a>:</p>
<ul>
<li>full url usage where ID is the correct value i.e mapillary=<a href="https://www.mapillary.com/map/im/4mayqgUw7QEHXjeTAXT5nw" rel="nofollow">https://www.mapillary.com/map/im/4mayqgUw7QEHXjeTAXT5nw</a> instead of mapillary=4mayqgUw7QEHXjeTAXT5nw</li>
<li>duplicate storage: also referenced as image=<a href="https://images.mapillary.com/4mayqgUw7QEHXjeTAXT5nw/thumb-2048.jpg" rel="nofollow">https://images.mapillary.com/4mayqgUw7QEHXjeTAXT5nw/thumb-2048.jpg</a></li>
</ul>
<p>As said in the ticket <a href="https://github.com/openstreetmap/openstreetmap-website/issues/2405#issuecomment-548917729" data-hovercard-type="issue" data-hovercard-url="/openstreetmap/openstreetmap-website/issues/2405/hovercard">2405</a> we have a good hint to make it almost maintenance free.</p>

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