Composers own arrangement of an opera excerpt

[Alexander Reuter]

I wanna upload the work "Crux alma veneranda" from Luigi Cherubini, both manuscript and my typeset. This is an arrangement (almost a contrafactum, some flute, oboe and clarinet 32th-bars are missing) of a trio from his own opera 'Faniska" (2nd act). What shall I do: setup a new work page for this work or upload this as an arrangemet within his opera Faniska workpage?

Grove lists this work as [arr. from canon for 3vv in Faniska]

[Davydov]

This would normally go on the opera's workpage, unless, for example, the composer had set a different text to the music to make it a completely different work