While Hammer hasn't generated new cache entries for all records, this will update over time and we should soon be in a situation where there is no longer a need to have any references from CAP into Preservation storage.
If there is a desire to clean this up early, I can write a tool that looks for these keys and marks the cache as dirty.
Hammer2 has been updated to no longer generate the CMR fields that related to paths into Preservation storage. https://github.com/crkn-rcdr/cihm-metadatabus/pull/90
While Hammer hasn't generated new cache entries for all records, this will update over time and we should soon be in a situation where there is no longer a need to have any references from CAP into Preservation storage.
If there is a desire to clean this up early, I can write a tool that looks for these keys and marks the cache as dirty.