Just my two cents here, but chrome has an headless mode that allows to "print to pdf" : https://developers.google.com/web/updates/2017/04/headless-chrome

I was trying to import the french holidays from google ICS file : https://calendar.google.com/calendar/ical/fr.french%23holiday%40group.v.calendar.google.com/public/basic.ics

I'm facing the exact same problem.

Is there anything I can do to make this move forward?

Good for me

I've added loggers in libphutil/conduit, and found out that in the differential.querydiffs requests, the conduitToken property is null.

BUT, moving the document to /w/stacks/ does work

The file is : /w/memo/aws/stacks/Stacks
Trying to move to: /w/aws/stacks/

Nope nothing before in apache error log.