I agree, the two rather obscure technical points I made in post #7 are unlikely to be of much practical use to Ernyokal, and I apologise if I have confused things and gone a bit off topic, but I found the opportunity to delve a bit deeper irresistible.

Jagger, you may well win the first part of your bet, but you owe me a pint of Guinness, regarding the second part -/ :)

The BODY is perfectly capable of containing targetGeom's, and I have checked that they DO survive a resave to the pallet.