Basically system is not recorderd. if site has SC, check investigate and look at archived failed 7. on the left panel
click on one of day under auto not find section and see if you can locate archive path
if it is, you have a chance to recover it
you need to run a script on DB
ALWAYS GET DB BACKUP first
see if you have archive class 7 calls
select *from (nice calls table name)
where iarchiveclass = 7
see if there is some calls has class 7
then
--select *from (nice calls table name)
--where iarchiveclass = 7
update (nice calls table name)
set iarchiveclass = 1 ( if calls has been already archived ,if it is new calls, put it 0)
where iarhciveclass =5