Hi, first of all: many thanks for this great plugin.
I have a site with about 12 parent pages and about 1200 subpages. The subpages were imported which went very fine, there were only some minor issues.
But now comes the tricky part: below these 1200 subpages I have import about 8000 subsubpages. I tried this with a small testfile but I believe it's no possible to import subsubpages, is that correct? Or do I also need a column with the post_ID of the grandparents?
In the .csv of the subsubpages I already have the name and slug of their parents (the 1200 subpages). Will this be enough, or does the the .csv file really have to contain the parents post_ID instead of the parent_slug? I do have the post_ID, but not in the .csv file so I would have to match these manually... 1200 times... :-(