Why are my InterCorp(fund) entries showing subledger detail from wrong periods?

Question:

Why are my InterCorp(fund) entries showing subledger detail from wrong periods?

Resolution:

User noticed that in the GL Drilldown, the intercorporate expense was correct, but in AP subledger, a different invoice showed from an earlier period.  The invoice from the GL expense acct for that period did not display.

Initial review of this showed the AP invoice dates in August, in correct period 8/11, BUT shows posted GL in 9/11.  AP detail (APPAYP) record correct for invoice date, period entered, period, paid as well as correct due to/from entries.

In 1 corp (in this case due to corp) the accounting period ending date was 8/30/11, whereas the Paying Corp (due from corp) has same period BUT with 8/31/11 ending date.  This caused the invoice in the (from corp) to show correctly, but the (to corp) to show 1 month behind due to ending date in the Accounting period file (ACTPDP).

Once the Period end date in to corp accounting period was corrected, the Drop of GL entries (Option 8 from the AP Month End Processing menu) was taken and the Close Month (option 1 from the AP Month End Processing Menu)  When Option 6 Force GL was taken all GL & AP corrected with drilldown to subledger correct for all invoices for all corps.