This article is focused on providing additional value, more details on deciduous bonsai care and reminding us of important details as provided in Bjorn Bjorholm's very instructional video.
This is by far the best tutorial you could find about repotting bonsai trees, "covering a lot of ground" on a range of use cases you might have to tackle when repotting.
One to watch. And if you think you know a thing or two on the subject, watch it still and let me know if it was worth your time.