Originally Posted by
oneworldfanclub
I’m wanting to book a WTP reward flight and upgrade with my GUF2 rather than cash + GUF so booking online won’t be an option I think.
I’ve spoken to 4 agents on the avios team now and no one has been able to process it so far but I can see I class on EF (UK POS) which they should be able to book into even though it’s a reward booking.
Worst case scenario I’ll reach GGL next week if all goes well so can always use a joker although it would be a waste

This is precisely the scenario I had when I last used a GUF2. I was booking into Club World using the GUF2 and was charged the Avios for the underlying WT+ booking. In this situation you don't need any Avios availability at all, in either WT+ or J. That's the whole point of the GUF2. The agent I spoke to used some specific term (I think it was "extended availability") when referring to accessing the revenue inventory and had to use a different system to see it.