How to handle IDOC segment with qualifiers in BODS?

Hi Experts,

I am working on a data migration project which requires to load open sales orders via IDOC. Knowing there are segments that use qualifiers to identify some key fields, I am wondering how to handle that in BODS.

For example:

sales organization (vbak-vkorg) E1EDK14-orgid QUALF(008)

dist channel (vbak-vtweg)E1EDK14-orgid QUALF(006)

division (vbak-spart) E1EDK14-orgid QUALF(007)

There is only one such segment in the standard IDOC. When I read from source VBAK table there will be 3 fields listed above, how can I map those into this one segment?

There are also lots of fields such as KURST(Exchg rate type), FAKSK(Billing block) that I did not find in the IDOC even looking at the structure via WE60. Please advise with your experience in handling migrating large amount of sales orders from Legacy SAP to new.

Appreciate your help!!