Warning: Do not use Qumana (version 3.0.1) to edit the old posts which has html code <!–more–> in it.
Because Qumana can only see the content before <!–more–> markup in your post, and the rest of the content will be permanently lost if you edit your old posts and save them under Qumana. I have lost a great proportion of my Ron Jeremy post because Qumana only showed part of my post, leaving me the impression that the post was incomplete. After I pressed Update Post, I only had one sentence of my post left.