Split at Selection (023)

So when I import a text (from ODT, saved as rtf or txt via LibreOffice), I’ll select a chunk of text (about 2000 words), select “split at selection”, and then another document with the entire imported text will be created and the original will be blank.

This happens in both linux native and win-scriv. Doesn’t matter if I do split at selection or split with selection as title.