Swing Playback in Compound Meter

I am writing a song in 4/4 with a swing feel specified in playback, and there is a section where the time signature switches to 6/8, but there should remain swung 8ths within the section. Dorico playback, however, switches to straight 8ths for the duration of this section. Is there something I’m missing which fixes this issue, or a more fundamental thing I’m missing? Thanks!

Welcome to the forum, perfect_fifth. Dorico only swings in simple time: how would you expect it to swing in 6/8? If you write quarter/8th patterns then that will sound swung, of course, but it’s not really sensible to swing 8ths in 6/8 because there are three 8ths in each dotted quarter beat.