I'm thinking Zimbra checks the browser type that is reported and if it is recognized it goes to Advanced, all other are forwarded to Standard. Adjust my thinking if I'm wrong, but would this be a minor edit we might be able to adjust in some config file?
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Culley
Mail | Dell 2950III | 2x Quad Core 5420 | 8gb RAM | 6x 146gb SAS RAID 0+1 | Red Hat 5.3 | Zimbra 6.0.10 Network Edition
Test | VMware ESXi Whitebox | Phenom II Black 3.2ghz | 12gb RAM | 6x 1tb SATA RAID 0+1 | CentOS 5.4 | FOSS, Not in use now |