Under the old scheme, you could add 10% taxy time to wheeled helicopters when opening your license. When I then added another (mil) type, this rule was not allowed.
I suggest you call them and clarify the latest situation given your circumstances. When you get the right answer, ask their name and write to them clarifying your conversation. The standardisation amongst the people that work there, and should therefore know the rules, is shocking. I have had one guy confirm all is ok, and on arrival in person with all the agreed documentation, another took great joy in telling me all was not in order. When I quoted the other guy, he apologised and said he was wrong. Cue thirty quids worth of wasted fuel. (I got what I needed eventually though
)
Good luck, especially given that they will still be learning CAP 804...