Is there any possible way to migrate saving template from old method to new method

[RakulAgn]

The Actual Requirements is the template is saving in as html, css, but in the current version its saving as json format is there any possible way to migrate to old template to new format ??

[artf]

All explained here https://grapesjs.com/docs/modules/Storage.html#html-code-with-project-data