Issue remapping key on the keycluster

Any reason I cannot remap the “FN” key on the keycluster?
Can others remap that key?

I updated in the JSON file and then that was fine but a little strange that I could not be done in Agent.

Native layer switch is always mapped in both the layers (i.e., base layer and the switched layer). And since layers can be remapped only from base layer, it means that if you have fn layer mapped on that key in base layer, you cannot remap that very key from the fn layer.

In other words: switch to base layer, then unmap the fn layer switch, then map whatever you want in both base and fn layer.

Furthermore, if you want to map something on the key while retaining the layer switch on base layer, you can map the layer switch in base layer via macros. That won’t consume the slot in fn layer.