/usr/ports/INDEX-5 and INDEX-6

[bob self]

I'm trying FreeBSD 6.0

I'm updating the ports this way:

cd /usr/ports
portsnap fetch
portsnap update
make fetchindex
portsdb -u

....

I see in /usr/ports that there is an INDEX-5 and an INDEX-6 plus an INDEX.

Why am I getting an INDEX-5 if I'm running version 6?

Bob