Thanks, Christian and Rick, for this information. I have some mods who are generally good but who sometimes act hurriedly and delete whole threads rather then just an offending post or two. In 7.2.2 I do not allow them the ability to delete whole threads and instead have trained them to move offensive threads to a private "holding tank forum" so that I can go and take a look. More often then not most of the thread is fine and, after some pruning, can be restored.
Knowing this I will probably wait for 7.3.1. But I am happy to wait as I know the product is excellent!
