BPA: Create Sub Nested Entity

This question is maybe a duplicate of Is it possible to create a nested table for level 3 using workflows in a cloud environment ? | IFS Community but that question wasn’t answered. We’re trying to automate a process and need to create a SalesCustomerAddressArray record in a CustomerInfoAddress. The signature of the API call is below:

CustomerHandling.svc/CustomerInfoSet(CustomerId='{CustomerId}')/CustomerInfoAddresses(CustomerId='{CustomerId',AddressId='{AddressId}')/SalesCustomerAddressArray

While the IFS Projection Call task can create the CustomerInfoAddress record as a Nested Entity easily, the SalesCustomerAddressArray record is a Sub Nested Entity which doesn’t seem to be available….yet. Has anyone ever run into this issue and what is the workaround for overcoming this issue? Was hoping there was a CustomerInfoAddressHanding projection but that’s not exposed.

TIA,