GEDCOM_COMPATIBILITY

GEDCOM compatibility and release checks

The supported GEDCOM and RootsMagic command syntax is maintained in the CLI reference. RootsMagic export supports portable and preservation profiles, connected/ancestor/descendant scopes, optional generation limits, and GEDCOM 5.5.5 with a deliberate 5.5.1 fallback.

The internal characterization CLI still recognizes --quality-report, --no-quality-report, --quality-root-person, and --quality-ai; application callers should use the service and unified command options documented by ancestry --help.

The merge engine preserves custom/vendor structures, citations, conflicting facts, family links, and stable pointers whenever representable. Optional LLM adjudication may identify likely duplicates but cannot delete conflicting evidence. Incremental sync never automatically deletes people, relationships, cited facts, protected baseline/manual content, families, or sources.

The safe offline fixture demo uses quality-source-a.ged, quality-source-b.ged, and root Maren Hollow:

scripts/gedcom_merge_quickstart.sh --skip-install

Before claiming a release interoperable, record automated validation and manual imports into current Ancestry, Geni, and MyHeritage products for both 5.5.5 and any advertised 5.5.1 fallback. Verify root selection, people/family counts, citations, names, dates, living-person behavior, and custom-tag loss reports.