Some information in connection is lost, after connectionsToEdges()

[leoadonia]

The dest in the connection might have some extra information other than the extension_group / extension, ex:

"connections": [
  {
    "extension_group": "some_group",
    "extension": "ext_a",
    "cmd": [
      {
        "name": "cmd_1",
        "dest": [
          {
            "extension_group": "some_group",
            "extension": "ext_b",
            "msg_conversion": {
              "type": "per_property",
              "rules": [
                {
                  "path": "extra_data",
                  "conversion_mode": "fixed_value",
                  "value": "tool_call"
                }
              ],
              "keep_original": true
            }
          }
        ]
      }
    ]
  }
]

Now, the graph designer will transform the graph connection to render the edges using connectionsToEdges(), and after then, the edge has no relationship with the graph connection. In edgesToConnections(), the graph connection is assigned according to the graph node but not the origin IConnectionData. If i open the graph designer, and do nothing else, the msg_conversion will be lost after saving graph.