DCdyc> Also, Warder in his Introduction to Pali p. 104 notes that future
DCdyc> active participles are very, very rare in Pali. Therefore the future
DCdyc> passive participle can have an active sense, which is presumably
DCdyc> what's happened with opaneyyiko - "that which will be leading."
Yes, and from my experience with Ukrainian and Russian, 'upa' prefix
can be somewhat awkwardly rendered in English as 'to' in the
construction 'leading to'.