Native Domino XML Classes equivalents of R5 XML toolkit

we are upgrading from r5 to r7. We have some Java agants which process XML, currently using the XML tool kit. IBM tell us that this is no longer supported under R7.

Is it possible to do a like for like match of old classes, methods & properties. If so where does such a translation table exist & are all the parameters the same?

Or does the whole thing have to be rewritten?