How to import XML? The manual says File-Import-Other. But the latest version of Logic does not have that option!
I tried dropping the XML file onto the Logic app icon, and import started. After an hour it was less than 1/20th thru the progress bar.. Using latest Big Sur on a clean install, newest Logic Pro trial, 3,2 Ghx 6 core intel Core i7 Mini with 64GB RAM nothing else running.