SAP R/3 4.6 C to ECC 6.0 Upgrade using CU &UC method- Unicode conversion

Basis Gurus

I am working on upgrade from R/3 4.6C to ECC 6.0.

ECC 6.0 upgrade completed( still in non Unicode). Now I am in the process of Unicode conversion.

I have used following methods for the upgrade.

1. Combined Upgrade & Unicode conversion(CU & UC)

2. Resource minimized( as I am doing it in Sandbox).

As I understand I need to perform the DB export and Import now for the unicode conversion.

According to the Upgrade document, First I need to run Export using R3load in ECC6.0(Non unicode)

and then install Unicode system and import the same data file.

My understanding was, when I choose, Resource minimized, I need to run Export and import

in the same system.

Can you please help me , whether I need another Unicode system for import ??

Graham