Есть такая нота: Note 48009 - Tables ACCTHD, ACCTIT, ACCTCR: Questions and answers
Вот что там написано про GCU1
Цитата:
When you subsequently post FI data that originates from MM Inventory Management or MM Invoice Verification, the system first checks as to whether data is also contained in the ACCT* tables. If data is found, no subsequent posting is made. As of Release 3.1H, you have the option of deactivating the above procedure ('Transfer MM, SD, and HR docs' indicator) so that FI documents that originate from MM Inventory Management or MM Invoice Verificationtypes are subsequently posted in this case also.
The disadvantage associated with this variant is that information may be lost, since an FI document might not contain all the data or certain data is summarized at your wish. Therefore, compare the fields of the tables BSEG and ACCT*. Consider possible summarizations set for table BSEG (see Note 36353). If the additional fields of the ACCT* tables are notimportant for you, subsequently posting from the dataset of the FI documents does not entail any disadvantages for you.
Они честно предупреждают что с этой галки для анализа возьмутся только поля из bseg, а в bseg поля BWART нету. Так что я думаю, что не будет у вас работать через gcu1, только gcu4.