URL Rewrite following upgrade from SharePoint 2007 to 2013

Hi All,

We have upgraded our SharePoint farm from 2007 to 2013 using a migration method. The old farm used sharepoint.diamond.ac.uk/sites/default/SITENAME... The 2013 farm uses the URL sharepoint.diamond.ac.uk/SITENAME...

I have been trying to use the URL Rewrite tool to make all our old intranet links work but it just will not redirect/rewrite/whatever. 

The rule we have is:

<rewrite>
<rewriteMaps>
<rewriteMap name="2007 to 2013">
<add key="/sites/default/" value="/" />
</rewriteMap>
<rewriteMap name="http->https" />
</rewriteMaps>
<rules>
<rule name="Rewrite rule1 for 2007 to 2013" enabled="true">
<match url="(.*)" />
<conditions>
<add input="{2007 to 2013:{REQUEST_URI}}" matchType="Pattern" pattern="/sites/default(.*)$" ignoreCase="true" negate="false" />
</conditions>
<action type="Redirect" url="/{C:1}" appendQueryString="false" />
</rule>

</rules>

</rewrite>

Can anyone give me any pointers?

Thanks

Nick