@Philip Ludvigsen - Welcome to Microsoft Q&A and thanks for reaching out to us.
We recently experienced a bug related to Reserved Instances recommendations missing, we recently released new filters for customers to allow them to filter by 1Y/3Y and Lookback period.
The bug was that some of the generated recommendations were missing the lookback period data, and as such, they didn't appear in the portal under any combination of filters. We are still waiting for the partner who provides the data to ensure that all recommendations have all the required fields, but in the meantime, we have made a change that will display those recommendations even with missing fields under a set of default values.
Hope this helps. and please feel free to reach out if you have any further questions.
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