Looking this design, the first thing I would not recommend to work exclusively wit linked components. To be honest for this design there is likely no reason to work with linked components at all.
Fusion 360 does not separate between assembly and part/component files and a complex assembly with all needed components and joints can be built in a single file.
It can really slow the design process down having to constantly edit and update external components. Standard catalog parts that are not going to be modified should be inserted one, the link broken and then use copy/paste to create the number instances needed. This is faster than importing them one-by-one from the data panel and breaking the link.
The second thing is that you should probably be naming your joints. While you can right-click on a joint and show the components involved in a joint I find that to be cumbersome and slower than just reading the description.
After breaking all the links one warning and one error appear.
The error is in the Active Remote Adapter Box and indicates a problem with RigidGroup1. Alas, RigidGroup1 cannot be found in the Browser tree. That's certainly a bug.
Looking at the stand-alone assembly that same error is present, so it does not have anything to do with inserting the assembly into another one and breaking the link.
Maybe @jeff_strater or @innovatenate can take a look at this.
Anyway, to fix that I simply deleted the offending rigid joint from the timeline and then applied a rigid joint to the entire assembly of Active Remote Adapter Case v1
In general every assembly should have one component grounded. it is important that it is a component, not an assembly. As such i grounded the Active Remote Adapter Base v1 in Active Remote Adapter Case v1.
Something else you should not do at is to have an assembly with one or more bodies at th same structure level with other components and assemblies.
The body in the screenshot below should be a component:
