Power BI Preview REST API for Dataset Creation

Hi,

Above all, it's so great to see Power BI REST API updates.

So I have a question.

Is this new preview Dataset creation API compatiable with existing APIs?

Especially for "Update an existing table schema", is it supposed to successfully update the schema of table without hurting relationships, measures and additional column options that are exposed in the new Dashboard creation API?

Thanks,

-Minsuk