With Zen 6.5 there was a documented upgrade path from ZfD3.2 SP3 to Zen
6.5.

Now with Zen 7 the minimum documented upgrade base is 4.01b or interim.

As Zen 7 is supposedly very similar code to 6.5 Sp1b, can the 6.5 upgrade
requirements be relied upon for the Desktops components ?

Cheers
Ian