I don't use AutoReader so it's hard to say, but scanning the code, I see line 692 in /libs/autoreader_functions.php:
Originally Posted by baadier
"testAlpha" will only work if the username is strictly aA-zZ. Maybe your users have numbers, hyphens or underscores in their names?
'author' => $h->cage->post->testAlpha('campaign_author'),
If so, try changing it to "testUsername" instead of "testAlpha". You may have to reassign the feeds to their authors to get the campaigns to update themselves.