So here's a question:

Trying to book a fly-drive for double tier points, LHR-HEL.

Previously not an issue, all outward and return flights bookable. Yet this time the return shows only two flights available, which is not what is showing as flight only.

Plot thickens, try to build a custom trip, hey presto the other flights appear, but there is a but the holiday now £300 extra [for no reason] and the killer is it doesn't show as a qualifying trip.

What's going on ???