I think I see the problem - VeSys 2.0 Harness only synchronizes conductors, connectors and splices. Regular devices are not included in the sync process, therefore you should have a connector for each device - you don't need to represent the fuse box as a connector in the design, it can be a device with either a Harness Connector or Device Connector defined in the library footprint. If your still struggling then please raise a service request, someone from customer services would be happy to describe that flow.
Thank you Nuri. I am not sure how long service requests take, but I am on a tight timeline and if I could get a quick fix, that would be desireable. So, are you saying to use a device for the fuseblock, and then attach a connector to all sides that have wires going in/out? Of course, this would have to be a shared connector. I guess that would be another way of handling the situation, but still not the most desireable.
Do you have a picture/part number of the fuseblock in question?
If you're tight for time, I'd be more than happy to take a look at your situation and the fuseblock in question and help you model this in your schematic. Please send me an email to firstname.lastname@example.org and I can kick off a support session.