Hi Maddy,
We've shared your question with the ACOMS team and they've asked you reach out through their help desk; either via email to
SharedSavi...@cms.hhs.gov or by clicking the help desk icon from your ACOMS account.
Your expectation matches the intended behavior of BCDA as the API uses CCLF8 files to determine attribution. Minor differences between BCDA and CCLF8 will occur as BCDA supplements the CCLF8 information with Medicare enrollees' data sharing preferences, which are processed daily.
Thanks,
The BCDA Team