When I import - split from my manuscript from word, this fails, alerts directly does not.
There’s a bug with Import & Split in 1.7.1. We’re expecting to release a fix for that and a few other bugs in the next week or so. Meanwhile you can use the regular Import command then use a combination of Edit > Find > Find and Documents > Split > at Selection to manually split the document. Once you’ve entered the search term for the divider character, you can use F3 to hop to each instance and Ctrl+K to split the document there.