Cannot Import Featured Images After Exporting Posts

Hi Everyone,

I’m trying to move my posts from one wordpress install to another, using the Import/Export features built into tools. However, I am not able to import the featured images onto the new site.

I’ve looked at the XML file and I believe the problem is residing from a custom postmeta key holding the featured image URL. These are the two strings in question.

<wp:postmeta>
			<wp:meta_key>_thumbnail_id</wp:meta_key>
			<wp:meta_value><![CDATA[6002]]></wp:meta_value>
		</wp:postmeta>
		<wp:postmeta>
			<wp:meta_key>_rps_img_src</wp:meta_key>
			<wp:meta_value><![CDATA[/wp-content/uploads/2013/08/DSCF3104-520x280.jpg]]></wp:meta_value>
		</wp:postmeta>

Can anyone help? I have a large amount of posts (~5K) and cannot afford to manually update each post with the correct featured image..