I aggregated posts with "The local copy on this website"
Since a few months, occasionally, some aggregated posts are marked as
"This post was created locally at this website"
Just upgraded to WP3.5 and FWP 2012.1218 (in combination with:
FWP+: Limit size of posts 2010.1011
FWP+: Limit size of posts: Read More link 2010.0207
Add Attribution for FeedWordPress 2010.0207
...but the error persists.
I see no errors in the error logs.
Example of a post incorrectly marked as "created locally":
Example of how the posts should be correctly aggregated: