Hi fl3tty,
Thanks for reaching out. Once you have published any pay runs through STP, you will have to complete the STP finalisation event in lieu of payment summaries. Also, you can continue with the new financial year's pay runs before lodging the STP finalisation for the last financial year. Ensure that you have marked the last pay runs of 18/19 as "Is Final".
More information about this can be found under Section 3-5 in this article by KeyPay: https://support.yourpayroll.com.au/hc/en-au/articles/360001019756-18-19-FY-Processing-of-Payment-Sum...
Bonny
