Autoblog Get Posts Older than two years

Okay, so I’m attempting to use this plugin on a site and I’m able to pull the most recent 25 posts from another site.

In settings I’ve set the number of posts to pull from daily and then I set the post start/end date. However, I do notice I can only go back as far as 2011. Is there some reason for this limitation? The posts date back to 2008 and I’d like to pick those up.

I’d appreciate any input on this.

Thanks.