Our team was using lucid chart to create ER diagram for our database. We collaborated and mapped fields of a big DB and everything was fine at that moment. When the diagram was accessed later many of the fields were transformed into garbage strings. Attaching a snap from the ER diagram.

Ques:
1. Is there a way to restore the diagram to earlier state ?
2. Is there a way to prevent this ? - we are experiencing the issue second time now.