Last week, Blogger announced that feature recently added to Production Blogger.
Today’s release features a brand new graduate from the Blogger in Draft testing ground: Import and Export for Blogger blogs.
There it is - in Blog Tools - at the top of the Settings - Other screen.
You have 2 links, right there in Settings - Other - "Blog Tools".
- Import Blog lets you import comments and posts, previously exported from any blog, and currently in a file on your computer, into this blog.
- Export Blog lets you export the all published comments and posts, from this blog, into a file on your computer.
It's not a complicated process.
- Export the entire contents - comments and posts - from the first blog.
- Import the entire contents - comments and posts - into the second blog. Do not publish automatically.
- From the Posts menu, select imported posts which you wish published, and Publish Selected.
Right now, the Export / Import process works within Blogger, LiveJournal, MovableType, and WordPress. This won't do anything with the template - you still have to backup the template, separately.
It will give you a quick ability to move all Published (Blogger Commenting hosted) comments and posts from one Blogger blog to another, assuming that you can administer both blogs. This may be useful for some bloggers who wish to transfer blog content to another blogging service. Don't go exporting from this blog, and importing back to this same blog, without understanding the limitations.
Note that Blogger Comments are exported with posts. If the blog use Google+ Comments, however, comments will not export - and cannot be transferred across a blog URL change. Whether you export / import, or simply re publish, Google+ Comments remain with the original URL.
With a blog of any significant size, it would be wise to import, then publish, in two separate steps. Get everything imported, and check out the Posts list under "Imported", before Publishing.
For more details about this exciting ability, see Roberto's Report: Importing and Exporting - An Overview.
(Update 2016/02): The Blogger "Export / Import" feature is now known as "Import & back up".