From your other thread:
I am not sure what is happening with your plugin. I have about 400 pages (half in English half in Spanish), so about 200 in each language. Only about 100 of those pages show up in the pages list (see screenshot).
I have no idea what happened. I have tried reinstalling, deactivating all of my plugins. None of my other content is being affected (thank goodness!).
Another thing to note is that when I select the "Show with All Pages" option I can get sidebars to appear on all pages. But that doesn't work for my site as I have a multi-level site and I don't want to show all those pages at one time.
Removing Content Aware Sidebars will delete all relevant data created by the plugin. Deactivating it will leave the data in the database so that the user can activate the plugin again and still use the sidebars.
Content Aware Sidebars will not manipulate with any data created by WordPress itself, other plugins, themes etc.
When you say "multi-level" site, do you then refer to WordPress multisite or that your site is multilingual (or both)? The plugin has not been tested with a multisite installation of WordPress.