So, the upgrade went well, and relatively smooth. I had just one glitch, which turned out to be my mistake setting up the mt-congfig file. I changed the design as well, used one of the templates from The Style Contest; I just need to find some time to customize it.

But first, I need to find a better editor, because this default thing is just a pain in the you know what. I just tried ecto, but it crashed on me twice, so that gone. Next, I will try this FCKeditor plugin. It seems that there are a few steps to get it work, but from the screenshots it looks like it could be all I need.