all invoice were combined into one journal

hi, Guys,

i have created 27 invoices at Invoice Workbench in AP module, after finished the Validatation and Payment for those invoices, i ran a request "Create Accounting", the request was completed successfully. then, i went to GL module, tried to find out the journal generated by the request just now. what i found was that there was only one journal with 2 lines, and the amount of that jounal was equal to those 27 invoices', i could not find out other jounal related those 27 invoices. i feel so strange. because we have not enabled the Invoice Batch function in AP module,