Hi PILOU

Thanks for the nod file. I checked your file and Yes, As you've guested, the ai generated nod has some issues.

Node editor expect the links property to be a JSON Object where the keys are the stringified Link IDs. However, the AI model mistakenly generated it as a JSON Array padded with null values.

Here is your file:

 code:
"links": [
	null,
	null,
	{"id": 2, "origin_id": 3, "origin_slot": 0, ...}
	...
]

It should be like this:

"links": {
  "2": {"id": 2, "origin_id": 3, "origin_slot": 0, "target_id": 22, "target_slot": 0, "data": null},
  "3": {"id": 3, "origin_id": 45, "origin_slot": 0, "target_id": 22, "target_slot": 1, "data": null},
  "4": {"id": 4, "origin_id": 22, "origin_slot": 0, "target_id": 4, "target_slot": 0, "data": null},
  "30": {"id": 30, "origin_id": 61, "origin_slot": 0, "target_id": 45, "target_slot": 0, "data": null},
  "31": {"id": 31, "origin_id": 51, "origin_slot": 0, "target_id": 45, "target_slot": 1, "data": null},
  "32": {"id": 32, "origin_id": 62, "origin_slot": 0, "target_id": 61, "target_slot": 1, "data": null}
},

Also, there is another issue. Your AI model kind of guessing the node types and class names due to lake of information. This generates some "Missed" nodes (not existing nodes) that results in blocked graph.
In your file, you have "Objects/Get Objects" node, That's not a correct node inside node editor. The correct node type is "Select/Select Scene Objects". That's why you don't get the update. The same happens for the old node editor.

Here is the fixed nod.