diff --git a/workplans/STATE-WP-0083-forge-derived-projection-reset.md b/workplans/STATE-WP-0083-forge-derived-projection-reset.md
index 1e7a7bd..d64be5a 100644
--- a/workplans/STATE-WP-0083-forge-derived-projection-reset.md
+++ b/workplans/STATE-WP-0083-forge-derived-projection-reset.md
@@ -219,7 +219,7 @@ filesystem.
 
 ```task
 id: STATE-WP-0083-T06
-status: progress
+status: done
 priority: high
 ```
 
@@ -306,6 +306,31 @@ repositories — `ADHOC-2026-07-02-T01` exists in three workplans — which is t
 problem `CUST-WP-0066` closed for new records while existing ones kept their
 unqualified ids. They need their own disposition.
 
+**Done (2026-08-26).** Corrected backfill applied to central: **5248 of 5974
+tasks identified, 5213 distinct, 35 duplicate identities.**
+
+The check before applying was uniqueness, not volume — the lesson from the first
+attempt, where a clean dry run reporting zero conflicts concealed 51 non-unique
+ids. All 136 pending updates were verified to take identities held by nothing
+else before a single row was written.
+
+The 35 remaining duplicates predate this work and fall into three classes:
+
+| Count | Class | Origin |
+|---|---|---|
+| 18 | `KONT-WP-0013-T00N` and similar | a workplan registered twice, so both copies claim the same task ids |
+| 12 | `RAILIANCE-WP-00NN-T0N` | archived RAILIANCE-WP files, left unrenamed by the owner decision of 2026-08-25 — the same numbers exist in three repositories, so their task ids collide |
+| 4 | `ADHOC-*-T0N` | unqualified ad-hoc ids reused across repositories, the class `CUST-WP-0066` closed for new records only |
+
+The `RAILIANCE-WP` twelve are worth noting as a consequence rather than a
+surprise: migrating only the *active* workplans was the right call for blast
+radius, and this is the price — the archived copies keep colliding identities
+until they are migrated too, and task-level reset cannot act on those workplans
+in the meantime.
+
+**Task-level reset remains blocked**, now on a narrower and better-understood
+problem: 35 identities, not 5974 unidentified rows.
+
 
 ## Restore a migration mechanism for central