I haven't uploaded a paper in a while (coauthors have been doing it more recently), but I'm pretty sure it encourages uploading document sources somewhere durin

I haven't uploaded a paper in a while (coauthors have been doing it more recently), but I'm pretty sure it encourages uploading document sources somewhere during the process. The issue that sibrahim mentions, about stuff in comments, is real: on a multi-author tex the file tends to end up being pretty messy, with lots of informal remarks and old versions in the comments. I always strip out all the comments before submitting.