The report's figures were taken with one client record of each shared
pair deactivated and a live Square import run afterwards. That is no
longer how this deploys — both records stay live and the re-key is what
separates them — so the numbers described a configuration that will not
exist.
Re-run from scratch: fresh restore of backup point 209608347 (verified
back to 16,545,495 charges and legacy keys before starting), the new
month-wise migration, then two full ninety-day recomputes.
before 1,451 days out of balance / $81,023.96
after 542 days out of balance / $20,239.00
915 into balance, 6 out, 17,916 summaries untouched
Two corrections to claims that no longer hold:
- "zero days knocked out of balance" is now six. All six are the same
shape — the Tip line falls by a round amount and the day breaks by
exactly that — and all six are on shared-location records. Each is a
tip reversed on one record whose refund went to its twin: the fix makes
a hidden mis-attribution visible rather than causing one.
- the migration takes ~38 minutes, not ~13. The month-wise walk adds
per-month index overhead, and the earlier figure predated it.
What did NOT move is the part that should not. For the 190 clients that
do not share a Square location the residue is 119 days and $1,730.61 in
both runs, with the same five restaurants accounting for it (NG4S, NGMV,
NGEB, NGPS, N-30012). The arithmetic fixes behave identically whatever is
done to the duplicates, which is a stronger check than either run alone.
$18,508.39 of the $20,239.00 — 91% — sits on the twenty shared-location
records. The report now states plainly what retiring the duplicates would
be worth (~$12,000 of variance across ~260 client-days per ninety days),
while noting the comparison is not perfectly isolated because the earlier
run also included a live import.
Migration re-measured: 16,236,839 re-keyed, 500,438 cloned, plan reports
{:total 17045933 :to-migrate 0 :already-scoped 17045933 :unscopable 0},
and the multi-parent gate reads 0 across all 5,158,470 orders of the last
year. Step 10's refunds re-measured too: 660 worth $15,237.02 dated
before their own record's first order, 140 of the 171 no-sales days
falling before it.
31 tests, 76 assertions.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Bryce
4a1817711d