nukebomb,
Two possible courses of action:
1. As colnrkurup said, APIO is not supposed to reply to a
RTI Applicant.
Just ignore his reply and let your appeal dated 15/4/2008 continue.
One problem here is that:
Your application to APIO on 11/3/2008
Add 5 days for APIO to
PIO: 16/3/2008
PIO reply due on 16/4/2008
You appealed 1 day early.
AA can raise technical hitch.
2. Your first appeal was based on the fact that no reply received.
Now that you have received a reply, you can make a second first appeal because
this time you are appealing against the reply of APIO and grounds are different than
the first first appeal.