Upgrade Problem

[ferra]

I did an upgrade from FC5 Zimbra release 4.5.9 to 4.5.11 with no problem.
Now I want to move to release 5.0.9.
I installed Fedora 7 with Zimbra 4.5.11 (for F7). When I restore the backup from 4.5.11 on FC5 into the system with F7 release 4.5.11 the users are gone.
If I do a zmprov gaa only shows the 4 defualt users.

for backup I used rsync -avHK /opt/zimbra/ /mnt/backzimbra
for restore rsync -avHK /mnat/backzimbra/ /opt/zimbra

After restore I did chown -Rf zimbra:zimbra /opt/zimbra, chmod -Rf 755 /opt/zimbra
the comand /opt/zimbra/libexec/zmfixperms returns an error:
ext-common: No such file or directory

What I did wrong?