am I not supposed to be able to

mutation { createNotes: {data: {connect: {...where noteId is XXX...] }} } }

why wouldn't you be supposed to do so?

it doesn't work using Prisma/yoga, I get errors. Should I try more, you mean this is possible?

Yes, this is possible 🙂 If you can't get it to run, I suggest creating a new thread in the Forum. I'd be happy to review your situation there.

I reverted to server/client roundtrip