Today I used a WP Migrate module to import my Wordpress blog posts. FInally that brought the content in, but I lost all the categorical tags in the process.
In my WP Blog content type, I'm trying to combine 2 types of tag choosers, without success.
Note with this post (below), I have the "Autocomplete Blog tags", a free field type what you want or auto-complete, and also "Blog tags", which shows to me in the editor as a radio-button tree chooser. They point at the same taxonomy vocabulary, so tags you type in under "Autocomplete Blog Tags" do get added to the tree under "blog tags" when you launch a new content editor. But, as far as this blog post is concerned, those two kinds of tags stay separate, they can't be pooled together as far as I can see. Note in the Autocomplete tags, I have "Drupal". In the radio button editor view, I see a empty checkbox for Drupal. .
Maybe I made a mistake thinking I liked the WP Blog tag system. I liked it as a way of building up a tree. But, maybe I don't want that. I'm not sure.