Improved Hoopla Integration
With the Hoopla integration turned on, Hoopla records don't roll up with everything else (it looks like it's because the ingested records have the author as First Name Last Name instead of Last Name, First Name).
If we get an API ingested record for a Hoopla item we already have a MARC record for, we end up with a duplicate in Vega.

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Jamie Naylor commented
Similar issue with some CloudLibrary records.
I know that the title and author must match (maybe other fields?) for proper rollup in Vega, though the specificity may be interfering with rollup.CloudLibrary uses the author's name only in most records, and we use the authority records which may include additional subfields, such as date, ‡c(Freelance journalist),‡eauthor.