I have a problem that makes me scratch my bolding head.

For years, I used older (published in before-Euro times) Michel specialized catalogs for Germany and Austria.

About four years ago I bought new editions of these catalogs, with values given in Euro, and, being a person of rather magnanimous character

, immediately gave away my older copies to other collectors.
Soon after that, I've noticed that some valuable information, contained in older Michel catalogs, has disappeared from new ones.

In particular, older Michel Deutschland Special catalog listed, in introductions to every German State (such as Baden, Bavaria, etc.)
numeral postmark numbers, sorted by degrees of their rarity.
To my vexation

, I discovered that this information
disappeared in recent editions of Michel Germany Specialized catalog.
Older Michel Specialized catalog of Austria listed detailed values for
many different perforation and paper varieties of 19th-century Austrian stamps, and I sorted these stamps in my collection using this information.
In the new edition of Michel Österreich Spezial, again to my rather extreme disappointment

, all information about rare perforation varieties
disappeared (remain only several major groups of perforations).
Also,
separate listings for paper varieties disappeared, being replaced by the small-print note saying something like "
specialists distinguish at least three different types of paper used while printing these issues."
Really? If I buy a specialized catalog, I would expect it to contain information that is important to a specialist collector!
Does anybody know, why Michel reduced so much the volume of information in their catalogs? Is it because of some copyright conflicts with experts who publish and sell their own detailed catalogs?
I know that there is a separate specialized catalog of old German postmarks (expensive, and difficult to find), and that there is Dr. Ferchenbauer's two-volume, luxurious, rather insanely detailed catalog of classic Austrian stamps (also fantastically expensive).

Are these editions, targeting rich collectors, the reason that somewhat more generalized but very useful information has been removed from the new editions of Michel Specialized catalogs?
One more mystery: the last edition (2004) of the best Italian catalog of Old Italian States (CEI, Catalogo Enciclopedico Italiano), and the only one that gives valused of Old Italian States' stamps in Euro, is
IMPOSSIBLE to find.
This is not an exaggeration. I see on Internet that even Italian collectors cannot buy it anywhere. I've been looking for it for years, with no success. It seems that some powerful competitor (I suspect Sassone) bought up all available copies to remove them from the market! There is no newer CEI edition in print, and publishers do not answer to inquiries. That's bloody strange.

(I've heard that sometimes bona fide wars fire up between competing stamp catalog publishers. In Russia, soon after the collapse of the Soviet Union in 1991, there were rumors that Solovyev, the editor of the popular specialized catalog of Russian stamps, had to hide, fearing for his life, because Zagorsky's people from St. Petersburg were trying to kill him. This is no more than a hearsay, of course, but, being Russian and knowing well Russian business practices, I am ready to velieve it.)

If anybody knows anything about these matters, please, tell me!
I never used so many emoticons before; please, forgive me this sudden urge to entertain myself.