Support for Menu Blocks

Does the D6 version not work with menu blocks?

I noticed on the module's page that it says the D7 version is a complete re-write and now supports menu blocks which suggests that the D6 version didn't but I can't find any information here or off Drupal.org.

This might not be the best place for the question but if I did want to get this module to work and still have the same abilities that I do with menu blocks (e.g. controlling which level and where) how would I go about that? I'm perfectly fine writing logic into the theme; however, I haven't been able to find this documented anywhere. Every instance of this topic points to menu_block!

I've tried using context as a different method and it worked but it's doing something strange where the core menu system doesn't recognize that the menu is active but menu_block does.

So, for instance, menu_get_active_trail() and menu_tree_page_data('primary-links') return nothing.

Thanks in advance for any assistance you can lend!

Danny