Preservation hold library due to retention labels applied by an adaptive scopes policy

Hi

I have an organisation that has recently changed branding and ownership. They have many Tb in SharePoint that needs to be deleted so they are not in breach.

Steps taken to remove this content is to remove the property used by the adaptive scope, remove disposition labels from all libraries and then delete from the site information page.

In the SharePoint site under site information when selecting delete- a warning comes up that corresponds to items that have a disposition label being present in the PHL. I can not adjust items in the PHL due to its immutable nature.

If I go to the admin centre and delete from there then the site does go to the right place in the deleted site list. However, access is retained on the site and if I restore and delete again it comes up with a warning due to the PHL.

I am a loss of what to do - sometimes I consider a group law suit against Microsoft because of the stress their tools cause (kick starter anyone?)! I have no confidence that the first delete from the admin centre does anything, I can't remove or change items I'm the PHL and I can't remove the label as only some of the site locations where it is present need to go. Any advice on what to do?