yum downgrade does not remove new package
<p><strong>Release 1</strong> contains the following packages</p>

<pre><code>Package A-1.0
Package B-1.0
</code></pre>

<p><strong>Release 2</strong> contains the following packages</p>

<pre><code>Package A-2.0
Package B-2.0
Package C-2.0
</code></pre>

<p>In <strong>Release 2</strong>, <code>Package B-1.0</code> was split into two packages - <code>package B-2.0</code> and <code>package C-2.0</code>. </p>

<p>Now when <strong>Release 2</strong> is installed, how do I downgrade to <strong>Release 1</strong>?</p>

<p><code>yum downgrade A B</code> tries to install <code>package B-1.0</code> which has file conflicts with <code>package C-2.0</code>. </p>

<p><code>yum downgrade A B C</code> does not work because there is no older version for <code>Package C</code>. </p>

<p>Is there a single command through which it erases the new package (<code>package C-2.0</code>) and downgrades packages A and B?</p>