Chappell Archive albums missing from UPM site

[KPMFan1000]

hxxps://www.universalproductionmusic.com/en-us/discover/labels/15/chappell?page=1&sort=activationDate%20desc&atts=20159
I just found out today that a lot of the chappell CDs that contain archive material either are removed or have their "archive" tracks removed from the album, i'm not sure if this is an error or not, and i have no idea why they aren't on the site anymore.

[Walk the Skies 202]

From what little I can infer, they seem to be gearing up to reissue said material on a new sub-label called Chappell Vaults Anthologies.
hxxps://productionmusic.fandom.com/wiki/List_of_miscellaneous_Chappell_Recorded_Music_Library_CD/digital_albums#Chappell_Vaults_Anthologies

That being said, I can't fathom why this would necessitate delisting the original albums that contained this material, especially how other libraries that have reissued older material don't pull previous reissues off older albums. Not sure what the thought process was here.

[Moleoman]

The label is available on Universal Production Music's UK website. I also feel confused by Universal completely moving these old Chappell albums into new sub-label instead of leaving them in both Chappell and Chappell Vault Antologies series like they did previously with Bruton:
h++ps://www,universalproductionmusic,com/en-gb/discover/labels/281/chappell-vaults-anthologies