I opened a ticket with Azrul (the writers of MyBlog) support to see if they could offer any assistance. They got back to me pretty sharply.
Here's their reply:
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Hi Zak
By default, since My Blog uses the same content's database table as the Joomla's default content component, you will have to hack the CB's author tab to not include My Blog's managed sections. To do so, firstly, you will have to include the configuration file of My Blog,
include_once('path/to/administrator/components/com_myblog/config.myblog.php');
Within the function itself, you will need to declare $_MY_CONFIG as a global variable, by adding the codes below,
global $_MY_CONFIG;
Then, you can get the managed sections by accessing,
$myblogSections = $_MY_CONFIG->get('managedSections');
The result should be in a string such as , '1,2,3' where the numbers are the section id and you will have to look for the sql query that the CB Author's tab uses to get the list of contents.
Hope this helps.
Mark
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