@james.dellow, thanks for the response.
My focus is on indenting storage format elements (like div, etc.), not specifically using macros. When this issue was brought up, new REST content was publishing under the new “fabric” style. It appears after a couple of days/weeks later, Atlassian adjusted REST calls to published content using the legacy formatting (which styles/alignments can be applied properly). It still appears to be the case (2020-02-11). If content is created using the online editor, it will use the fabric style – and REST update calls on that page will still use the new fabric style.
From what I can tell, publishing with the atlas_doc_format representation will publish pages in the Atlassian Document Format. I am under the suspicion that this is the long term goal for documentation representation (correct me if I am wrong). Unfortunately, it looks like under this new representation, there will no longer be the ability to control advanced styling (e.g. no ability to customize paragraph indentations on a document).
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