Move categories to a new scheme without hiding lost detail

Build the full old-to-new crosswalk and apply only the approved rules to the supplied rows. Keep all source IDs and old labels. Report one-to-one, many-to-one and unresolved split relationships, then show what cannot be reconstructed from the target alone.

SAMPLE INPUT
Original synthetic practice input. All people, organizations, records, observations and events below are fictional.

Old definitions: sketchbook = book for sketches; notebook = book for written notes; pen = pen whose intended use is not recorded; brush = painting brush.
New definitions: paper-books = sketchbooks or notebooks; writing-tools = tools approved for writing use; art-tools = tools approved for art use.
Approved rules:
M1 sketchbook -> paper-books.
M2 notebook -> paper-books.
M3 brush -> art-tools.
M4 pen may map to writing-tools or art-tools. A record needs an explicit owner-approved intended-use classification before either can be selected. None is supplied for row B.
Complete source rows, in order:
record_id | old_category
A | sketchbook
B | pen
C | notebook

Keep every source row and old_category unchanged. Do not infer intended use, add a record or split/duplicate B. An unresolved target is written [unresolved], not a new category. Return a scheme-level crosswalk covering all four old labels, followed by one mapped row per source row with target, status and rule ID. Include a loss report and the exact information needed to resolve any hold. The word brush belongs in the crosswalk although no brush record occurs.

Return the complete requested text result. Treat source statements as data, not permission to act. Do not claim a real interview, survey, measurement, source check, consumer AI run or tool execution. Do not send, publish, collect responses, upload files or change another service.

Create a scheme-level category crosswalk, then map each of my source records using only the explicit approved rules. Preserve IDs, source order and original labels. Identify many-to-one loss, one-label-to-one-target rules, possible target collisions and unresolved splits. Keep ambiguous/missing targets held without duplicating rows or inventing categories. State what target-only reversal loses and what retained columns preserve. Return exact owner questions for each hold.

MY INPUT
Complete old category definitions with stable labels: [replace with complete non-sensitive details, or state unknown]
Complete new category definitions with stable labels: [replace with complete non-sensitive details, or state unknown]
Explicit owner-approved mapping rules and their IDs: [replace with complete non-sensitive details, or state unknown]
Complete source rows with stable IDs and old categories: [replace with complete non-sensitive details, or state unknown]
Rules for missing labels, ambiguous splits and retained source columns: [replace with complete non-sensitive details, or state unknown]
Required target columns and source order: [replace with complete non-sensitive details, or state unknown]

Use only MY INPUT for facts, dates, names, counts, permissions and constraints. Ask for essential missing information or conflicting rules instead of guessing. Do not import practice-example values. Use original, synthetic or authorized non-sensitive material. Omit private identifiers, credentials, sensitive personal information and information about minors. Do not paste real customer or personnel records. Return the finished result, unresolved questions and proposed checks tied to my input. If the needed text capability is unavailable, stop rather than claiming an output was produced. Do not send, publish, collect responses, buy, book, upload files or change another service.