“the big design flaw”
hawk does not store history for files.
so if you accidentally delete a file, it's gone.
for this reason, if you have data you care about in hawk, it's wise to take backups.
in the “meta” tab, you can import/export from/to .jam files.
this can be used to store backups of your hawk trees.
an export saves the whole subtree.
an import merges with the current subtree.
if there are conflicts, the imported nodes take precedence.