QUESTION: How to save the dynamically added traits

I made it work by having a count attribute on the component and then adding the trait count times in the init of the container.

This is the correct way.

Traits are intentionally skipped from the JSON, otherwise, you'd put on hold your component definition in the storage (eg. the day you'll upgrade the component with new traits, your users will still see the old ones)

@artf, thanks for replying. That was a really valuable piece of information.

I made it work by having a count attribute on the component and then adding the trait count times in the init of the container.