Same here. Child flows are parent specific somehow (like the real world 😉 ). I have a child flow that can only be called from one of the parents, not the other (same error as Atilio shows).
Save as is not an option, because the newly created flow is not listed when I try to include it in the solution.
So, again I will duplicate the code of the child flow to the flows that are using it.
Did you solve the problem, Atilio?
Regards,
Elowy.