@DTubbs I have usually handled these cases by custom (hand-coded) bridge logic for each implementation. You can then manage these custom bridges via your configuration management scheme, so you can still build your old system when you change to a new processor.
@Martin “Bridging Domain” sounds like an oxymoron. Bridges are visible on the system model, and they should be able to be connected to multiple domains.
I have noticed some issues with xtUML Editor’s use of interfaces, which make them less usable than the previous way of handling bridges. Maybe this is bringing up issues to handling @DTubbs concerns and why @Martin is proposing bridges as components. ???