Question on radgroupreply query

We use FR in a hospitality environment, and user credentials are created dynamically.  Because those credentials are set to expire after a preset period of time, we have a process that removes stale entries from the various tables.  Otherwise, a user who reconnects after his session expires gets a reject, because FR returns the older attributes, rather than the newest ones. I have not reviewed the code (not an expert), but I wonder if by changing the query, adding "order by id desc," this situation might be remedied.  Will that do the trick for us? Thanks, -- Jim