duplicate nodes created after import

This is a weird one and has me baffled!

I created a new importer using xpath to import a XML file.
After setting up my importer, i test out 1 property to import. It works fine.
I then test 2 properties to imports, it goes wrong!

Its a bit weird to explain so i took screenshots instead.

The xml structure:

<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0" xmlns:g="http://globrix.com/ns/1.0">
  <channel>
    <title>Sales</title>
    <description>Our properties</description>
    <link>http://www.example.co.uk/</link>
        
    <item>
      <title><![CDATA[Old Forge, Butchers Cross, Five Ashes, TN20]]></title>
      <g:instruction>buy</g:instruction>
      <g:price>75000</g:price>
      <g:type>Land</g:type>
      <link>http://www.example.co.uk/details.dtx?propertyid=1</link>
    </item>
    <item>
      <title><![CDATA[Stonewall Park Road, Langton Green, Tunbridge Wells, TN3]]></title>
      <g:instruction>buy</g:instruction>
      <g:price>198000</g:price>
      <g:type>Residential</g:type>
      <link>http://www.example.co.uk/details.dtx?propertyid=2</link>
    </item>
  </channel>
</rss>

Context: //item
GUID: //item/title
Price: //item/price
etc...

Any ideas??