One of the issues sometime reported by business SME is that they are not able to reconcile / internal order settlement postings at month end in Finance module.
The issue is due to standard SAP standard behaviour before ECC 6.0 EHP6 release.
Now in ECC 6.0 EHP6 release a setting has been provided as standard to enable the field value transfer from CO settlement line item to FI posting.
Follow the instructions listed in Note as below:
968725 - Doc. summarization deactivation, additional fields transfer