Does Autoblog delete posts when the RSS feed removes the data?

I am using Autoblog, and so far its working fantastic.

My question is will autoblog delete posts when the RSS feed removes the data from the stream automatically or do I need to do it manually?

I am using the autoblog for real estate data and I want to make sure that if there are changes to the data like price changes, the posts update.

Or if a listing is sold, the post will get deleted.

The posts should always stay in sync with the RSS feed.