AFAIK you can only pass cq:page to the publications section given the right template.
What I'm trying to do is drag & drop .article files which are associated with InDesign into
the publications section.
Please advise how I configure this using crdxe or via templates.
Can you use FolioBuilder panel in InDesign to upload your articles to the folio?
In 6.2 DPS Classic Support is being deprecated in favour of DPS2015 support.
I don't believe enough of the infrastructure you'd need is exported/available to do it OOTB nor am i aware of someone having done it already.
AEM also integrates with InDesignServer. It may be possible to use InDesign Server to do the upload of the InDesign content.