This should be easy I would have thought but I can't find the button to push. How do I switch from 4.0 to 4.3.2? I have the schema and can start a new project with it, do I do that & import my model?
When opening your file, expand the options in the dialog, and there's an upgrade schema button:
Thank you @sjb007
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When opening your file, expand the options in the dialog, and there's an upgrade schema button:

Thank you @sjb007