Does PQ not support YYYY/MM/DD date format?

Hi,

I know that I can convert a value in date format to YYYY/MM/DD in text format with this code:

NextStep = Table.TransformColumnTypes(Table.TransformColumnTypes(LastStep,{{"Date Column Name", type date}}), {{"Date Column Name", type text}}, "ja-JP"),

However, if I start with YYYY/MM/DD in text format, how can I get it to YYYY/MM/DD in date format?

These formats would be fine as well:

YYYY/M/D

YYYY-MM-DD

YYYY-M-D

I think none of these date formats are supported by PQ, but just to make sure, can anybody confirm?

I tried to set Using Locale ja-JP but it shows DD/MM/YYYY or MM/DD/YYYY only,

Thanks!