<p>Can I find (the old) excerpt/Wiki of a tag that is now a synonym of another tag?</p>

<p>E.g. the excerpt and Wiki of the <a href="https://stats.stackexchange.com/questions/tagged/arima" class="post-tag" title="show questions tagged &#39;arima&#39;" rel="tag">arima</a> tag builds on ARMA (does not discuss what ARMA is). But since <a href="https://stats.stackexchange.com/questions/tagged/arma" class="post-tag" title="show questions tagged &#39;arma&#39;" rel="tag">arma</a> has been made a synonym of <a href="https://stats.stackexchange.com/questions/tagged/arima" class="post-tag" title="show questions tagged &#39;arima&#39;" rel="tag">arima</a>, the excerpt and Wiki of <a href="https://stats.stackexchange.com/questions/tagged/arima" class="post-tag" title="show questions tagged &#39;arima&#39;" rel="tag">arima</a> now would need an update to explain what ARMA is. I wanted to borrow these from the <a href="https://stats.stackexchange.com/questions/tagged/arma" class="post-tag" title="show questions tagged &#39;arma&#39;" rel="tag">arma</a> tag, but I do not know how to access its (old) excerpt and Wiki now that the tag no longer exists independently.</p>
