I had a need to use the content_import tool and found a couple bugs that I'm working on a PR for. But I also found a functionality issue that is outside the plugin itself.
The API endpoint .../item/export/page calls include/channel.php::channel_export_items_page() which uses resource_type='' in the where clause of the item query. This means that WIKI items and (at least some) event items, certain portions of web pages (PDL files) and anything with resource_type set by an addon (eg., the chess addon) are not included in the results.
I'm sort of guessing that this was so that PHOTOS were excluded, since they would be "files" - but it'd be nice to get some confirmation or some other explanation. My gut instinct is to set the query to resource_type != 'photo' so that it catches everything. I just want to make sure nobody knows of a good reason not to do this.
(sorry for the dupe for those that saw it.... I'm SO out of practice!)