ID 442689 - Modo crashes when saving a .lxo with hidden node link that has been deleted.

Problem summary
Modo crashes when saving a .lxo with hidden node link that has been deleted.

Customer reported version
modo.14.0v2

Customer reported platform
windows10

Steps to reproduce

1) Open Modo and create a new scene file.
2) Go to the Setup layout and add the default "mesh" item to the Schematic viewport, either through drag and drop or by selecting 'Add Selected'.
3) With the default mesh selected add a 'Merge Meshes' node.

4) Select the link between the nodes and press the 'h' key to hide the link and the link should turn red.

5) Select the 'Merge Meshes' node and delete it.

6) Now save the file as a .lxo and notice that Modo crashes.

Expected behaviour

The scene file should be saved.

Actual behaviour
Modo crashes.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:
14.0v2 - Windows 10

14.0v1 - Windows 10

13.2v1 - Windows 10

13.1v1 - Windows 10

13.0v1 - Windows 10

Earliest version tested

13.0v1 - This feature did not exist before this version.