Fixed wing to rotary conversion
There seems to be a misconception that there is not a full set of ATPL(H) exams in all subjects. They have been in force for at least two years at helicopter only schools, such as HAI and now Dragon with their CPL(H).
The f/w schools were granted an exemption during the transition stage and this seems to have been extended indefinitely for commercial reasons as it would not make sense for them to hold separate classes for one or two pupils. Thus they do all f/w except for POF(H).
However, as you can see in LASORs there is a bridging exam for ATPL(A) to (H) consisting of POF(H),OPS PROC(H), Perf(H), and a composite paper consisting of Air Law, Airframes and systems, Instrumentation, Mass and balance, Flight Planning and monitoring.
This paper seems to be a committee idea. Air law is not generic, instruments work the same way with different markings on them, flight planning is low level with a different chart and a slow speed confuser, M&B is pure calculation, the only difference is that MTOW is the same as MLDGW. So all we really needed was the old Rotor controls and transmission, which used to be included in POF(H).
That is what we have got, so pass the lot.