diff --git a/packages/client/hmi-client/src/components/workflow/ops/calibrate-ensemble-ciemss/calibrate-ensemble-util.ts b/packages/client/hmi-client/src/components/workflow/ops/calibrate-ensemble-ciemss/calibrate-ensemble-util.ts
index 106127396b..9388bbc6eb 100644
--- a/packages/client/hmi-client/src/components/workflow/ops/calibrate-ensemble-ciemss/calibrate-ensemble-util.ts
+++ b/packages/client/hmi-client/src/components/workflow/ops/calibrate-ensemble-ciemss/calibrate-ensemble-util.ts
@@ -61,9 +61,7 @@ export function formatCalibrateModelConfigurations(
 	rows.forEach((row) => {
 		Object.entries(row.modelConfigurationMappings).forEach(([key, value]) => {
 			if (!ensembleModelConfigMap[key]) return;
-			ensembleModelConfigMap[key].solutionMappings = {
-				[row.datasetMapping]: value
-			};
+			ensembleModelConfigMap[key].solutionMappings[row.datasetMapping] = value;
 		});
 	});
 
diff --git a/packages/client/hmi-client/src/components/workflow/ops/simulate-ensemble-ciemss/simulate-ensemble-util.ts b/packages/client/hmi-client/src/components/workflow/ops/simulate-ensemble-ciemss/simulate-ensemble-util.ts
index 5642622f8f..7772a68e4b 100644
--- a/packages/client/hmi-client/src/components/workflow/ops/simulate-ensemble-ciemss/simulate-ensemble-util.ts
+++ b/packages/client/hmi-client/src/components/workflow/ops/simulate-ensemble-ciemss/simulate-ensemble-util.ts
@@ -24,9 +24,7 @@ export function formatSimulateModelConfigurations(
 	rows.forEach((row) => {
 		Object.entries(row.modelConfigurationMappings).forEach(([key, value]) => {
 			if (!ensembleModelConfigMap[key]) return;
-			ensembleModelConfigMap[key].solutionMappings = {
-				[row.newName]: value
-			};
+			ensembleModelConfigMap[key].solutionMappings[row.newName] = value;
 		});
 	});