Topic: Upgrade 5.6 to 6.01-01 quesiton

[ryan]

I have the following rpms in use on 5.6 that are addons to 5.6:

port forwarding & port opening rpms
imp 3.2.1 (calenar, memo, horde & mysql updates)
frontmail w/rbl
clamav run by script (for 5.6)

Will this server upgrade OK?  If not, do I do a backup, then install fresh 5.6, restore, then upgrade to 6.01?  

Any input is appreciated.  Is there a posted list of rpms that must be removed before an upgrade to 6.01?

Thanks,

Ryan