BW - SAP Source system configuration

Hello Everyone,

I 've got some questions regarding the configuration of a SAP Source system in RSA (BW). According to the configuration guide you need to do the following steps in the Source system before connecting both sytems (BW & SAP NW ABAP):

• Cross-client Customizing and repository changesIn the implemenation guide, under SAP NetWeaverApplication ServerIDoc Interface / Application Link Enabling (ALE)Basic SettingsLogical SystemsAssign Logical System to Client, select the relevant client and choose GotoDetail.In the Cross-Client Object Changes field, choose the Changes to Repository and Cross-Client Customizing Allowed option.
• Changes to the software components Local Developments(LOCAL) and SAP NetWeaver BW(SAP_BW)In the Transport Organizer Tools (Transaction SE03) choose AdministrationSet System Change Option and then Execute. In the next screen mark the software componentsLOCALandSAP_BWaschangeable.
• Changes to the customer name range.In the Transport Organizer Tools (Transaction SE03) choose AdministrationSet System Change Option and then Execute. In the next screen mark the customer namespace as changeable.
• Changes in the BW namespaces with prefix/BI0/(SAP namespace) and/BIC/(customer namespace)In the Transport Organizer Tools (Transaction SE03) choose AdministrationSet System Change Option and then Execute. On the next screen, mark the BW namespaces with the prefixes/BI0/and/BIC/as changeable

Apart form the RFCs and system users created, what else does this configuration do? Is there some customizing (client-dependant or closs client) or repository objects changed? Are theses steps documented somewhere? Lets' assumed that I'm done with this source system (NW ABAP), is there a way to reverse this configuration? I mean, like It was before the connection to BW.

Best regards,

Jam