I haven't uploaded news often (and not for a while) and it has happened probably every time. Once it took me over two hours to upload a smallish batch.
The first time I uploaded news, I uploaded and left it to get on with it and came back to find some hadn't gone up, didn't really think about it, 'managed' those which were up (for speed), then uploaded the rest and got a 'row' for putting them up in two batches.
Anyway, I've never had anything sell off the news feed (haven't uploaded much news, to be fair - got disheartened when two newspapers ran really dreadful old technology phonecam photos) but one has sold later as secondary editorial.