Consumption Advice - Pay on Receipt Autoinvoice issue

Currently,our Pay on Receipt Autoinvoice is scheduled to run every Sunday night, but there are times when, from different reasons, the invoices are not created. We run it manually in the next days after the initial problem is solved, but we noticed that if we run it on Tuesday for example, adding transactions dates from previous week, the concurrent program will create an invoice X with system date as Invoice date. Next Sunday, when the concurrent program will run, it will create a new invoice only for those transactions that are created after the last invoice date. If there are any transactions before that date, the program will add them to that invoice (the Tuesday one) and will create a new one for the rest of transactions.