SL 11 as ARA2 in Nuendo 13 - Muted Audio after processing

Today I wanted to remove noise from a 15-minute piece of dialogue.
I opened SpectraLayers 11 as ARA in Nuendo 13 and successfully removed the noise after many minutes of rendering (unmix noise Speech)

Now I thought I could edit and cut the dialogue track as usual.
But after making the first cut, the audio in the relevant event was suddenly muted. Even after restarting Nuendo, it remained muted. Only when I removed Spectralayers from the track I could hear something again.

So I started all over again… this time I made the edit “permanent”.
Same problem.
So all over again, this time before editing “render in place” so that I get a new audio file - that actually worked. But that can’t be the solution, can it?

Nuendo 13 - latetest Version
SL 11 - latest Version
Windows 11 - latest Version