Per note 886102, we come under scenario B1 where we are doing a system copy using export/import on BW only(no action on source systems) and will be build a new system. Once built, old system will not be used i..e we are replacing a productive system with a new one. However per note scenario B1 can be identified with scenario B3.
Per Scenario B3, we have to save source system dependent objects in the target system and later in the end re-import. This is not needed in B1 scenario since we are building a new system. Do you concur or see any deviations. More often than not, even the straight forward of the assumptions could go wrong so want to run it by you.
Regards
Kalyan