Take a look at this plugin: https://github.com/infazz/flexible-templates
It allows saving of Flexible content templates.
Please note that current version is only able to work with one flexible content on the page. Plugin is fresh and in beta. 🙂
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ACF PRO’s Flexible Content field allows you to create smaller pieces of UI and compose them into whole flexible patterns. In our latest article, we show how to use it to create swappable site sections and integrate it all in a theme.https://t.co/ZRocH8oJSp