Firstly, I think this mod is great and fits certain use cases nicely.

With new behavior in 2.0, when copy and pasting wires are preserved to their attachments.

It would be really nice to support this same behavior on this entity, since the only way move things around is dolly picker.

if you copy and paste the entities that the FO is connected to, it should retain the wires.

Retaining the wires if you only copy the FO itself is trickier as this is a compound entity (every connection point is a separate, invisible entity) and managing that is not easy. The official game entities can use the engine itself, any mod must rely on events fired.

I will add an issue to look into this but for now, if you are not copying the target entities as well (or do undo/redo), the wires get lost. It is a known problem.