Is it as simple as having 2 blogs on the website? Separate sections.
I post into the 1st blog with the toolbox icon button. Live review with Safari.
Then click/grab that post in the sidebar and drag it to the 2nd blog (named Archived Blogs) that was created at the bottom of the sidebar using that same toolbox icon button at the top.
Save with the 1st Blog Index page highlighted.
Live review with Safari - it seems to have worked !