Sometimes deleting message?? Rated 4 out of 5 stars

A very useful add-on! However, since I installed it and after upgrade to TB 3.1.6 I face a problem, but I'm not sure whether the add-on causes the problem. Sometimes the original message is copied to the current folder but the reply itself is deleted. Gone! Even not present in the Trash. The message has been sent, because I get answers from the recipient. Anybody with a similar experience?

This review is for a previous version of the add-on (0.9.5).