When uploading a package to experiments, it's common to test various things and re-upload a fix, with the same version. Currently this is rejected, e.g.: https://debusine.debian.net/debian/developers-beuc-secure7zip/work-request/489336/ https://debusine.debian.net/debian/developers-beuc-secure7zip/work-request/489310/ It would be nice to allow replacing packages in experiments.