Job and/or API to unlink a set of bib records from the CZ
We would like the ability to run a job or use an API that would unlink a set of bib records from the CZ. There are currently both a job and an API that will unlink records from the NZ, but not the CZ.
Use case: ebook portfolio records provided from vendors can be extremely brief, missing many points of discovery (e.g., no subjects, tables of contents, etc.). When portfolio bibs are linked to the CZ, we are forced to update each of these portfolios one at a time, which is painstaking and inefficient. We already have scripts that use the Bib API to update physical records; if there was a CZ equivalent of the "op=unlinkfromnz" API parameter, we would be able to unlink these inferior records from the CZ, add necessary fields, and update the bib record, all using the Bibs API.

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Charlie Remy commented
I'd also like the ability to unlink CZ portfolios in bulk. Currently one can link portfolios to the CZ via a job but not unlink them.