The Cambridge Grammar of the English Language, page 172, reads
Are you going to be helping them again this year? (where the non-progressive might be construed as a request: in Will you go to the shops this afternoon? the salient interpretation is as a request to you to go to the shops.
--Backinstadiums (talk) 17:13, 17 October 2019 (UTC)
In my own lexicon of compositional terms, going to + infinitive:
Moments ago I posted an edit that comports with the relevant corpus of taxonomy in Wiktionary (which rely on traditional linguistic perspectives rather than on modern developments). However, the edit doesn't fully square with the terms in my own lexicon. I apologize to anyone who is familiar with the modern terminology in my own book, recognizes me as the author of the freshly-minted going to edit, and thus recognizes the divergent terminology involved.
Notice to the non-linguistically challenged: If you rue the thrust of the changes entailed in my edit given your understanding of how modern linguistic elements have obsoleted some of the terms in the going to article, please resist any urge to revert my edit. Instead, please submit a wholesale revision of the article.
Notice to the linguistically unevolved: If you're unable to disambiguate (or you otherwise disagree with) the thrust of the changes entailed in my edit, please resist any knee-jerk impulse to revert the edit. Instead, please acquaint yourself with the relevant developments in linguistic terminology and then judiciously offer your own corresponding edits.
Cheers. --Kent Dominic (talk) 05:02, 22 April 2020 (UTC)
Surely what's meant is "I'm gonna New York" --Backinstadiums (talk) 16:08, 9 August 2020 (UTC)