Can't really say how linuxsampler-dssi works wrt. saving/restoring its state. From your post I can read that it doesn't and you're welcome to ask the linuxsampler-dssi developers how they intended that to work, if at all.
I guess the linuxsampler-dssi plugin should save/restore its state through the DSSI "configure" interface as it's the official protocol for just that. Qtractor would handle it as with any other DSSI plugin. However, it doesn't seem to work in that way. I'll have to investigate this case in particular and try and tell you later what's actually missing.
Meanwhile, the LV2 plugin seems to work just fine in that regard.
Can't really say how linuxsampler-dssi works wrt. saving/restoring its state. From your post I can read that it doesn't and you're welcome to ask the linuxsampler-dssi developers how they intended that to work, if at all.
I guess the linuxsampler-dssi plugin should save/restore its state through the DSSI "configure" interface as it's the official protocol for just that. Qtractor would handle it as with any other DSSI plugin. However, it doesn't seem to work in that way. I'll have to investigate this case in particular and try and tell you later what's actually missing.
Meanwhile, the LV2 plugin seems to work just fine in that regard.
Cheers