Well I found it. It's so simple
Burdeos is the 2009-2013 Edition
Azul the 2014 - Edition
So I ordered the 2 first Azul volumes, that's all I need for Spain, no interest past 1939
The Azul need 2 volumes to cover 1850 - 1939 because they add more information , the Azul volume 1 have 2 pages more than the Burgeos vol 1, so it give an idea how much they add info.

The 2002 Edition was covering 1850-1949
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it was decided to drop the post-2000 issues (prob not so much collector demand. I will say that the new breakdown makes more sense from a periodization standpoint
the post-2000 is not yet publish, like Michel, Edifil don't publish all the volume the same year.
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Volume I is 19th Century to the defeat of 1898 and its impact
Volume II is post-1898 defeat Alfonso XIII, Spanish Republic and Civil War issues
the war as nothing to do with the cut betwen the book Volume 1 go up to 1900 and vol 2 start in 1901 , if you look at the chart, part of Alfonso XIII is included in Vol 1