mistercrunch edited a comment on issue #10327:
URL: 
https://github.com/apache/incubator-superset/issues/10327#issuecomment-662805929


   Confirming that this is a problem. It's been discussed before but I don't 
remember the details. Tagging @graceguo-supercat who may have ideas on how to 
solve this.
   
   A clear first step is to version the dashboard as a sequential id in the 
database and keep track of that id on the client, and prevent overwriting if 
the version has change since it was checked out, force a "save as" at that time.
   
   More generally, we'd like for models like queries, charts and dashboard to 
allow versioning and never destroy previous versions. Django had this 
"reversion" plugin, I'm thinking something like that. For reference: 
https://django-reversion.readthedocs.io/en/stable/


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