dual core debugging on NXP LPC43XX

We have a crossworks solution for an NXP LPC4350 which has a cortex M4 and a cortex M0. We have one project in the solution that targets the M4, and another that targets the M0. The M4 and M0 are interdependent so our application requires both processors to be running to operate

Previously, we used crossworks version 3.6 along with a cross connect to do multi core debugging, using the method outline here: https://rowley.zendesk.com/hc/en-us/community/posts/360003367932-Dual-Core-Debugging-Hints-on-LPC43XX?input_string=multi%20core%20debugging

if we wanted to debug the M0, we would start the M4 project, and once it was running, set the active project to the M0 project. However, upon upgrading to crossworks 4.0, this ability is no longer available.

We need to be able to debug both processor cores at the same time using a cross connect.

The crossworks reference manual is missing a description of how to achieve this.

Could anyone please provide instructions in as much detail as possible for multi core debugging using crossworks 4.0 and a crossconnect on an NXP LPC4350?