Unable to update stories originally published to Apple News sandbox

[alexbrothman]

Description

Hi all. In configuring and testing Apple News, we were unable to use a test site with Apple's sandbox environment. We were forced to test by publishing articles from our production site to Apple's sandbox. Now that we've switched to Apple's production environment, new articles publish correctly but we're unable to update or re-publish the articles we tested with (403 FORBIDDEN responses).

I read the note from @kevinfodness about removing postmeta here: #438 (comment)

Is there any documentation or guidance on doing this? I believe this would resolve the issue we're facing, though a confirmation that we're on the right path would be appreciated.

Thanks in advance for any assistance.