Hello Bennetz,
What you can do is route the incoming DMX data from the input port to output B. However, what you should keep in mind is that, when using the recorder, the input data is always mapped to universe A. Hence, any recorded DMX data is always routed to the output port A. In other words; you can create 'link' between the input port and output port B, however back, you can't record DMX which, when playing the recording, is send to output port B. You can achieve this through Art-Net, but this is a workaround and not really straight forward.
Another thing to keep in mind is that CueluxPro will temporarily disable the standalone functionality of the CueCore. That is, when a CueCore is selected to be used in CueluxPro the CueCore will be marked as 'mastered', all standalone functionalities are paused, and all DMX ports are controlled by CueluxPro. Whenever CueloPro releases the unit, all standalone functionalities will come back online. If this creates a problem, you could try to route the the incoming DMX data to output port B via CueluxPro, but again, this is a bit of a workaround.
Please let me know if this helps or if you need further assistants with the programming and good luck!
Best regards,
Jurrien