Hello everyone,
I am using Finale 27.4.1.146 on a Mac with Catalina 10.15.7. 
In a 4-part vocal piece Finale Human Playback (set to Standard, through Audio Units) is playing the dynamic markings I've notated in all the staves except one: that part is played forte all the way through, despite the pianissimos and other markings. I can't figure out why, and it's a real pity because when the performers will receive the soundfile some ppp passages will be blasted by the voice that is not responding to the instructions. 
I've tried to see if there's something odd with that particular staff attributes, or in the audio setting, the mixer, the settings in Scoremanager, but all settings seem to be exactly the same as the other 3 more obedient voices. There is no layering in the piece or anything else that to my knowledge might have originated the problem.
Any ideas? 

Thanks for the help,
Krishna