Matt Wiebe

Many older WP sites used categories and/or pages to organize what were essentially subsites without proper access control and other site-specific goodies like themes, widgets, and plugins.
This plugin lets you move that content to another site on your WordPress network with a single click, with seamless redirects.
This is beta software. Back stuff up first. (I shouldn’t have to tell you that, right?)

Move to Subsite

Move posts in a category and/or a page hierarchy to a new subsite, with seamless redirects.

Gaurav Aggarwal

Backup And Move plugin allow blog administrators to create a complete backup of their blog and easy option for restore it on a different server, domain, location, etc .This plugin is very usefull for non technical users who wants to shift their wordpress blog. 
This plugin can make all the transitions of moving a wordpress blog , creating a complete backup and restoring a previous backup very simple and smooth. 
Save restore.php by <a href="https://plugins.svn.wordpress.org/backup-and-move/tags/restore.php" rel="nofollow ugc"> clicking here</a>.
<ul>
<li>A separate backup can be created and send to users’s email id as attachment.</li>
<li>User can administrate backups i.e delete , download and overwrite.</li>
<li>To restore a backup simply place .zip backup file in a directory along with restore.php and visit restore.php from browser. Provide restore.php with all required credentials and wait for plugin to restore .</li>
<li>That’s it start bloging.</li>
</ul>

P.S everything will be restored like blogs, posts, links , etc.

Backup and Move Plugin

This plugin allow blog administrators (even non-technicals) to create a complete backup of their blog and restore it on a different server,domain,etc

Move to Subsite vs Backup and Move Plugin