Don't export old manifest list which has been removed

[hao-yu]

fixes #2041

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[dralley]

@hao-yu Sorry for the delayed review, this got lost in the pile somehow. Could you add a changelog entry for this? Just a little bit of description inside CHANGES/2041.bugfix, and also fix the one small formatting issue (see the lint CI check)? We can merge and release immediately thereafter

[mdellweg]

After thorough discussion and playing through all the scenarios as a Gedankenexperiment, we concluded that this is exactly the correct way to fix.
Thank you for all the analysis.