There’s now a new API cgi script – CopySU.  This lets you both copy and link SUs to new parents.  For example you might want to copy an existing book within the same reading list if there is another volume with very similar details, or you might want to link a single book SU into more than one reading list.  In the latter case a change made to the book SU is reflected in all the reading lists it is linked to, irrespective of the list that it was “edited in”.

Jason now has to munge this into CLUMP so that the copy buttons in there run with this new functionality, as at the moment they are just placeholders that generate a new child SU.  Seems to work from the command line/by hand so fingers crossed, eh? 🙂