ss="n">another</span> <span class="n">app</span>
</pre></div>
</div>
<p>Then select “Photos” from the menu and “Always”.  This will restore the
thumbnail, but it will remove the association to mrv2.  To once again
associate mrv2 to the file, go again to:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Open</span> <span class="k">with</span><span class="o">-&gt;</span><span class="n">Choose</span> <span class="n">another</span> <span class="n">a