[GNC] Restoring backups

[Fuchs Ira]

Conversely, if I move the current .gnucash to another machine that only has this file (and gnucash app) and open it, I don't see any recent transactions (only transactions from several years ago when I last used this test machine). Does the .gnucash file not contain everything? Put another way, how would I migrate the current state (or an earlier state) to another machine?