As a result, we are exporting comments to Generic XML format for
manual import into Disqus. I have been testing these imports for
several weeks in test Disqus sites and had thought that I had worked
out all the bugs. I have probably imported in excess of 500,000
comments with relatively few issues.
Today I was to finally launch the production version of the comments
into a new production site. Today every import file I submit returns
a long list of the same error "Unable to find parent post" - there is
no detail beyond that.
My XML format has not changed, we do not support nested comments, I
have compared XML to previous successful imports and they match
exactly.
Disqus Support says they are investigating, but no real answers.
The same comments have been imported multiple times in different
sites, so I am wondering if this has become an issue.
Any feedback, opinions or suggestions welcomed.
Thank you.
<wp:comment_parent />
As advised by David Cramer [who went far out of his way to assist me],
I removed the <wp:comment_parent /> from the XML and my data flew
through the import process.
I am not sure if other NULL fields should be treated in the same way,
but mine worked.
Thank you David.