Thanks, I hope this will be useful for other people! 1) When I google for some advanced operations (like multi-column sort), the advice seemed to be export as

Thanks, I hope this will be useful for other people! 1) When I google for some advanced operations (like multi-column sort), the advice seemed to be export as CSV and do it in openoffice. 2) While orgzly is a good attempt, if you google around you will find lots of limitations (it's too long since I've used it), as it is a reimplementation of org-mode so can't hope to be feature complete.