It was suspeciouse that in old spec(and I might say the one had been modified from the initial/first CoP spec) has to put up Bielmman position explicitly for one critirial as to raise the level.
I'm not sure what you found suspicious.
2003-04
http://www.isu.org/vsite/vfile/page/fileurl/0,11040,4844-150834-168050-39935-0-file,00.pdf
In the original definitions of levels, ISU communication 1224 (dated August 5, 2003), there were at that time three possible levels for all elements, and the Biellmann was listed under Layback spins as a feature for level 3 but not for level 2.
2004-05
http://www.isu.org/vsite/vfile/page/fileurl/0,11040,4844-168494-185712-61701-0-file,00.pdf
Communication 1263, dated June 20, 2004, adds the increase of speed criterion for both levels 2 and 3, but Biellmann is still only listed for level 3 under laybacks. (Increase of speed is also mentioned as an example of a difficult variation for camel and sitspins but is not specifically listed under the level charts except for laybacks.)
Also, there is a clarification under the difficult spin variation examples that Biellmann is considered a variation of an upright, not a camel, spin. (I.e., going from another upright variation, such as layback, to a Biellmann position does not make the spin into a combination spin, unless of course there are other camel or sit variations included, but going from camel to Biellmann does make it a combination -- this is necessary for determining what kind of spin is being performed but doesn't by itself affect the levels.)
For spirals, several examples of difficult variations are given:
Twisting the upper body affecting the main body core and balance, bending or pulling the upper body towards the skating leg, moving
free leg from behind to the side of the body while maintaining free leg height, obtaining the Bielmann position.
For spins, the examples given are:
*sit spin (broken leg) – changing the weight distribution by bending the leg to the side or behind the main body core.
*camel spin with the upper body turned upwards app 180% (upside down position)
*camel spin – body arched where head and free foot are almost touching (doughnut spin)
*upright spin – where from the hips to the skating foot it is straight and the upper body is bent down towards to ice.
2005-06
http://www.isu.org/vsite/vfile/page/fileurl/0,11040,4844-175180-192398-89562-0-file,00.pdf
Communication 1319, May 23, 2005, marks the introduction of four levels for singles/pairs elements. The assignment of levels is simplified by just listing the number of features required to achieve a certain level for a certain type of element, and separately listing the possible features. Thus the Biellmann becomes available as a layback feature for the new levels 2 and 3 in addition to level 4 (which is pretty much equivalent to old level 3).
Among many other clarifications and rule changes, there is a note that, for the ladies' short program required layback element:
The position of a “Biellmann Spin” can only be taken and considered as a feature to increase the Level after having successfully rotated these required 8 revolutions in the layback-position (backward or sideways).
Under the level definitions, the Biellmann listing notes
Bielmann position after 8 revolutions in layback spin (SP only)
In other words, in the ladies' short program only, the Biellmann will no longer count as a feature unless at least 8 revolutions of layback and/or sideways leaning have already been performed. In the long program or in combination spins, it just counts as a difficult variation same as any other difficult variation, with the same number of required revolutions in position as any other variation.
2006-07
http://www.isu.org/vsite/vfile/page/fileurl/0,11040,4844-174766-191984-105514-0-file,00.pdf
In communication 1384, April 20, 2006, the level descriptions are simplified so that all level 2 elements must have 2 features, 3 for level 3, and 4 for level 4.
http://www.isu.org/vsite/vfile/page/fileurl/0,11040,4844-177063-194281-109218-0-file,00.pdf
In communication 1396, July 12, 2006, the number of Biellmanns in a program are limited:
Remark: Bielmann [sic] positions counts as a feature that can increase the Level only in one spin in the Short Program and in two spins in Free Skating. While doing that, the first spin(s) is (are) taken into account.
Those are all the rule changes/clarifications about Biellmanns. Which of them is suspicious to you?
