diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a492a0..1b2f5ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,30 +6,28 @@ As changed, removed, or added.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Commit [3102097](https://github.com/Atlantis-Ecosystem-Model/AtlantisTrunk/commit/310209784bb56e44980f9be6a0fc87410cb6f036)
 
-### Changed
-- Updated ReactiveAtlantisToolExample.R in the model example so it runs without having to change paths
-
-### Removed 
-
-### Added
-- Explicitly defined `flagmother`, `start_n`, and `end_n` in `Get_Settler_Contaminants` (atContaminants.c) to address an intermittent SETas segfault.
-- Replaced `malloc` with `calloc` for `bm->forceMoveEntryInput` allocation (atForcedMovement.c) to avoid uninitialized memory.
-
-## Commit [cf96dbb](https://github.com/Atlantis-Ecosystem-Model/AtlantisTrunk/commit/cf96dbbb4ac7b2f3342d0caa997031f8fdaf3e29)
+## [3.6723] - 2026-09-28 - Commit [5ad4666](https://github.com/Atlantis-Ecosystem-Model/AtlantisTrunk/commit/5ad46667f7977dabbeaad89ffe62e601bb1d82f4)
 
 ### Changed
 - Defined temp_sensitive_sp=0, salt_sensitive_sp=0, mignum_actual=0.0, and int rij, rangeid, rocstage = -1, thiscase1 = 0, thiscase2 = 0, adstage, sp_Migrate_Years, stagger_return = 0, agec;
 in function Ecology_Total_Verts_And_Migration in atmovement.c to correct segmentation fault
 - Moved /* Actual numbers returning - corrected for losses while away */
                         mignum_actual = MIGRATION[sp].survival[qid] * mignum; to right before mignum_actual is used for the first time
+- Updated ReactiveAtlantisToolExample.R in the model example so it runs without having to change paths
+- In atContaminants.c in function Change_Contaminant_Levels, separated tracking of contaminants into two distinct arrays for the organisms and the environment.
+Added tracking of contaminant transfers not yet integrated into the tracer array. Applies contaminant transfer immediately to tracer arrays so that predators will see updated concentrations. 
+Phytoplankton, small zooplankton, filter feeders, and PWN can uptake contaminants multiple times per time step mimicking continuous feeding
+
 
 ### Removed 
 
 ### Added
+- Explicitly defined `flagmother`, `start_n`, and `end_n` in `Get_Settler_Contaminants` (atContaminants.c) to address an intermittent SETas segfault.
+- Replaced `malloc` with `calloc` for `bm->forceMoveEntryInput` allocation (atForcedMovement.c) to avoid uninitialized memory.
 - if (stock_id < 0) {stock_id = 0;} so stock id would be defined before bing used as it was causing a memory loss
-
+- Contaminants from dead organisms are transferred to Carrion in atContaminants.C. Carrion can now accumulate contaminants multiple times per timestep. 
+Contaminant transfer in atGroupProcesses.C to Carrion from dead organisms based on total detritus production (DL + DR)
 
 ## [3.6722] - 2026-05-22 - Commit [94ccf9b](https://github.com/Atlantis-Ecosystem-Model/AtlantisTrunk/commit/94ccf9b9b32f3465182d17645646d2c31446d95e)