Funny I had not seen your previous message, Bop - sorry for that. Using the procmon to capture the events is fairly easy as you will see. Just run it, it should be capturing events by default once started - you can ensure it is just by navigating to 'File' menu. With procmon running, repeat your test. Once the browser claims that bookmarks have been imported, navigate back to procmon > 'File' > Save > you should see what is in the attachment I am adding, then just go with "OK". Feel free to let me know should anything need clarification.
Cheers!
Pavel