The first section of rack to be relaid has been installed at Holzapfel.
The ivy has been removed completely (well, insofar as one ever can remove ivy completely) and new decking boards installed.
This time, thicker edge boards will be used throughout - in odd places where I'd used thicker materials before, it had weathered much better than the slightly smaller section I'd used in most places.
Load testing (electrical conductivity testing, more to the point).
Ballasted, and good to go. The eagle eyed may observe that the halt has yet to be reinstalled.