First of all there is no such as Hessen or Hanoverian stud. There are state studs in Celle and Dillenburg. Than there was a Hessen breeding regsitry and there is a Hanoverian breeding regsitry. The tweo studs mentioned above are/were closely related to the Hanoverian and Hessen registries in Terms of the horses in These studs were registered in that registry. Ownership of the studs has nothing to do with the breeding registries.
The merger between Hessen and Hannover happened much earlier than 2010.
As far as I remember the only approval that needed to be done was the check of Pedigree. No physical approval as if you want to be member in another registry.
Please let us really keep the terms correct. Not studs are merging but breeding registries.
Well the reasons may be economical, but what the Hanoverian Verband just has done has a strange taste to some people looking at it from the economical side. They pay for the people working for Rhineland. They do not merge the studsbooks in a way that they are managed now by lesser people etc. etc. I do not see any economical effects in this merger in the way it was done at all.The Problem is that the people deciding with their vote often have not infomed themselves or did not ask for these things. But the decision was made and now we will see. I have also honestly have no clue why the Rhineland breeders did decide for hanover. Any breeder from there now has to drive up North passing Westfalen breeding registry area with whcih the used to work closely. My big strong guess (After hearing from Rhineland breeders) is the following: A lot of breeders from the Rhineland registry will stop their memeber ship and move over either to Westfalen or if possible to Oldenburg / OS !