inserting with imagecache creates an absolute path

when inserting images with imagecache, the image url is absolute.
for example using the insert module with imagecache preset inserts
<a href="http://example.com/image.jpg" >
to the node body.
but I want to move the server to another domain and all the images that are inserted with insert module are absolute path.

what is the solution ?
what can I do to prevent the insert module from linking to the image with absolute path and instead link with the relative path.