2LIS_02_HDR and 2LIS_02_ITM enhancement

Hi experts,

I need to enhance this

1. 2LIS_02_ITM - deletion indicator (LOEKZ)
2. 2LIS_02_HDR - Company code (BURKS), deletion indicator (LOEKZ), PO creator (ERNAM) and Release Indicator (FRGKE)

For 1), the field exists in standard structure (in LBWE), and i can change it to include in the active structure

For 2), fields BURKS and LOEKZ exist in standard structure (in LBWE), and i can change it to include in the active structure

My issue is with fields ERNAM and FRGKE (both from EKKO).

I though of doing a append structure. For ERNAM it should be ok, because field won't change. But i'm concerned with FRGKE.. This a release status and it will chande over time.

If i do an append to the structure, with this field, what will happen to delta?

example:

PO X, release status X on 01.01.2010 - its extracted

on day 05.01.2010, POX status changes to Y. would this be extracted and overwrite my records in BW, like the "normal" delta enabled datasources.

can you please help me in pointinh which should be the best solution for this?

Many Thanks

Joana