dh_strip registers debug-symbol packages in debian/files under their renamed .ddeb name; they are deliverables of the build just like the regular .debs. Both artifact-type filters, the one collecting the build's artifacts and the one feeding the .buildinfo/.changes checksum sections, accepted only deb and udeb, so every ddeb a build produced was silently discarded: nothing exported next to the .debs, nothing in the upload metadata. The filter is now a shared FilesEntry::is_binary_artifact() predicate (plus unit tests) used by both call sites, so the two cannot drift apart again. One dpkg distinction has to be copied rather than shared: dpkg-genchanges lists only deb/udeb packages in the changes' Binary: and Description (a ddeb travels in Files and the checksum sections but is not a listed binary of the upload), while dpkg-genbuildinfo lists every binary artifact's package, ddebs included. The package list is therefore accumulated twice, once per consumer. The binary-metadata differential fixture gains a Package-Type: ddeb package, so the native .changes/.buildinfo generation is compared against real dpkg with a ddeb present. Without the fix the comparison fails on the checksum sections (golden distributes the ddeb, ours dropped it); with it every field matches.