I hope you are not talking seriously now. Thats a common cartography practice the we all learn in universities!!!
Is community consensus on trial?
I cant believe whats happening here!!!!!!!

Is there a problem with community consensus? We have stopped using nat_ref for more than one year now.
That was a clear community decision. Of course there was one member (as always) that didn't follow this community decision.
I cant understand why we are having this conversation!!!

Happy mapping!!!

Of course same rule also applies to the section Φλώρινα - Έδεσσα.

That is the rule, but as you can see someone of our members didn't follow it.

Σκύδρα - Μελίσσι

eg Σκύδρα - Μελλίσι

The trunk road replaced the old EO2. So the ref and name (Θεσσαλονίκης - Έδεσσας) of the old EO2 must go to the new road.
The old sections of EO2 must have old_ref=ΕΟ2 and be renamed according to local destinations.

We have decided to use the ref key at national road network.

PS. I have a question. Do you speak Greek?

I already answered that, above.

I will stop the reverts now

Also there are members that read the forum but they dont post, and we communicate with pm.

Anyway, read the our wiki pages here osm.wiki/Greece , and ask if you have questions.

Communitity guidelines where formed by voting in a period of 8 years. Just because you see now only 3 members, this does not mean that the 3 of us we made the rules.
In forum we talk and disagree for many things, but community rules are in the wiki for many years.

Names are defined by official documents

And there are no signs in Greece. But that does not mean that the roads have no names.

Also, the ref=EO2 must go to the trunk road too, because EO2 replaced by this trunk road.

I have already told him to consult our community.

And FYI the way/655441474 is part of national road ΕΟ3 and the name of this road (by Government Gazzete) is Πτολεμαίδας - Φλώρινας.
The name Φλώρινας - Έδεσσας must go to the nearby trunk road.

The name of this road is not the main issue here. I have already reported this user 2 days ago. Please read my report.

And please leave comments at your edits.