Using umbracoInternalRedirectID on a content picker, to re-direct parent-node to first child.

If hit delete, save and publish, all appears fine, but the re-direct is not removed and the original page (before delete) is published.

If the node is refreshed, the link re-appears next to the property.

(Please note this is not the root node to "home" node, that uses the same picker, but has a permanent re-direct in the urlReWrite config. Have changed the name of first child, but still the same occurs)

This is a U6 beta build.

Can anyone suggest what is happening here?

Regards

Gary