Hello,
When a graph fails to deserialize, the previously serialized graph is saved, so the chances of completely losing a graph are very very minimal (never occurred or reported since after this failsafe “feature” has been implemented) and there should always be a way to restore it.
Do you get any errors at all in the console when you hit “Re-Validate”?
Do you get any errors at all in the console when the assembly is re-loaded (eg you changed a script) or when opening up the Unity project?
Please let me know and I will do my best to walk you through how to resolve this. If you want you can also contact me directly (support_AT_paradoxnotion.com) in regards to this issue.
Gavalakis
