How long are messages kept, please,and how do I get into my old topics and replies?
Forever !!
Completed lookup requests are sometimes
moved i.e.
not 'deleted' to a board "completed look-up requests", to make on-going and not-completed requests on the request boards easier to find.
Moved posts are still available for you and others to view, but on the 'completed' board, rather than the 'Look-up' board.
If you have switched on your e-mail notification for a topic, then you will always get an e-mail, to notify you that at least one reply has been posted since you last viewed the topic.
With or without e-mail notification, it will also be in the list:
Show new replies to your posts. at the top of every RootsChat page.
So don't worry about being away, you won't miss anything

Bob