02/27/2017 at 3:41 pm #413113
Ah, thanks, that tip to look at the Network tab and into the admin-ajax.php revealed what seems to be an error in our functions.php file in our child theme. I saw a “?>” at the beginning of the request; temporarily removed our functions.php file completely; and the import worked correctly, with multiple admin-ajax.php firings.
So we’ll look through our functions.php file to see if we can find the error, most likely a typo somewhere.
Will let you know how it turns out.