Ann: Appendix 4C - Quarterly Report, page-2

Seems like some good numbers in this report but I don't get this:
Both these impacts contributed to a Net Operating Cash outflow of $568k
for the quarter. The delayed cash receipts were received early in July 2018 and will be recognised in the
September quarter
If the delayed payments were worth mentioning, they must be material, so why not include a dollar amount. Seems a bit amateur to me. Surely having a good grasp on cash flow is fundamental to valuing this company?