Updated posts disappeared

First thank you all for this great plugin.

I got a some kind of bug.
All the feeds articles that have been edited by the respective author on the source blog, have been deleted by feedwordpress and in their place I got an empty content with a “date” (I think it’s the update date form RSS) as title, and more this new content is a “draft”.
The last thing is the only positive thing, otherwise I will have a blog full of empty posts.

I tried looking into a RSS source from a blogspot site:
<published>2012-08-13T14:46:00.000+02:00</published><updated>2012-08-13T16:40:03.213+02:00</updated>

Everytime there are this tags published/updated the “published” become the empty-draft-article, the “updated” wich is the “real” article is not available, the old version is deleted.

I tried to delete, post, feed, unsibscribe, trash etc… nothing happens. When I re-subscribe that RSS the untouched articles work, the updated ones don’t.

Can anyone help me?
Pw

PS: last version of FWP is installed, I got this problem even in earlier version.
PSPS: I will look on error.log of the site searching for something that could be related to FWP.

http://ww.wp.xz.cn/plugins/feedwordpress/