[Box Backup] Simple Question about housekeeping

[Alexandre Mallais]

with Box Backup how does the "housekeeping" decides what to delete when

the soft limit is reached ?

Is it the oldest of the deleted file first, then the oldest of the "Old 
files"... etc ?

or is it completly random (the first deleted or old files it finds, it 
deletes it) ?

Can I trust boxbackup for having some rotation in my files, and just 
delete the oldest of them all ?

Sorry for the bad english.