Hello, problem with copy paste, I think it happens when the node is with bus.
The demultiplex node had BUS using “Convert Selected Link to Buses”. Delete the buses and copied without error.
The copy was in the same project and another project. Open after being saved previously.
The image tells me that pin identifiers of demultiplex has changed although the should stay immutable forever… Unless you’ve re-created all terminals inside the demultiplex patch node (output-bool’s and input-number).
Do you have a step-by-step scenario to reproduce it (create that, click this, swith that, save all, exit, open it, etc)? I am not able to repeat the problem.