Fires are variable. Each Fire looks different in shade and pattern. I have done alot of research on fires and received information from Davies including pictures that show color changes in continued breeding. The fact that they may be different lines makes them no different. They are still the same morph.
With what some breeders have said in this thread it would be okay for me to get a imported animal lets say a wide pattern Mojave that has very high blushing. Upon getting this new lineage animal from Africa I can call it the purple dragon! And anyone who sees the new purple dragon is now being misled (intentional or unintentional) because I didn't PROVE it to be different.
I just don't see how anyone can be okay with saying hey it looks different so I believe it is different. Also on the topic of super cinny's and black pastels. They are different not only by lineage but by mutation characteristics. Cinny's produce different colors and their pattern is often more circular.
If we want to argue that davies fires and Ember's sulfurs are different lines we would actually need to do blood tests to determine this how would anyone possibly know without it.