[Dx-qsl] IRCs in Greenland

[Roger]

All,
An amateur operator in OX-land told me that his Post Office demands two
IRCs for an airmail letter to South America, even if the IRC is the "new
model".

On the back side of a "new model" IRC I read:
"This coupon is exchangeable in any country of the Universal Postal Union=

for the minimum postage for an unregistered priority item or an unregiste=
red
letter sent by air to a foreign country"

What is wrong? Doesn't Greenland/Denmark belongs to the UPU?
73, Roger PY1OL