Here are simple steps how to move your post directly to another blog:
Import Into an Existing Blog
To import posts and comments into an already existing blog, start by clicking Import Blog from the existing blog's Settings | Basic tab.Note: Your template will not be affected by the imported content.
Next, choose a Blogger export file (.xml) from your hard drive and fill out the word verification beneath. By default, all of your imported posts will remain unpublished until you publish them from your dashboard later. However, if you would rather have all posts published immediately, make sure to check the box next to Automatically publish all imported posts before you click Import Blog.
If you did not choose to have your posts publish automatically, you will need to manually publish them from the Posting | Edit Posts tab before they will appear on the web. You can either publish all the posts at once by clicking Publish all imported posts, or publish individual posts by selecting them and then clicking Publish Selected.
Before, doing this try to export first your blog. Simply, save your existing blog in .xml file.Then follow the steps above.