diff --git a/docs-mslearn/toolkit/changelog.md b/docs-mslearn/toolkit/changelog.md
index db543056d..a5c83863d 100644
--- a/docs-mslearn/toolkit/changelog.md
+++ b/docs-mslearn/toolkit/changelog.md
@@ -49,6 +49,7 @@ _Released August 2025_
   - Fixed all Bicep compilation errors and warnings with inline suppressions and descriptive comments.
   - Fixed Build-Toolkit.ps1 bicep generate-params command bug.
   - Fixed Azure Data Explorer dashboard queries by converting `todecimal(0)` to `toreal(0)` to ensure compatibility with KQL type system ([#1893](https://github.com/microsoft/finops-toolkit/issues/1893)).
+  - Fixed backward compatibility in `Costs_transform_v1_2()` to support Cost Management exports that predate FOCUS 1.2 by adding fallback mappings for `PricingCurrency`, `SkuMeter`, and `SkuPriceDetails` columns to their legacy `x_` counterparts.
 
 ### [Optimization engine](optimization-engine/overview.md) v13
 
diff --git a/src/templates/finops-hub/modules/Microsoft.FinOpsHubs/Analytics/scripts/IngestionSetup_v1_2.kql b/src/templates/finops-hub/modules/Microsoft.FinOpsHubs/Analytics/scripts/IngestionSetup_v1_2.kql
index ae5a5d95c..4f4d66711 100644
--- a/src/templates/finops-hub/modules/Microsoft.FinOpsHubs/Analytics/scripts/IngestionSetup_v1_2.kql
+++ b/src/templates/finops-hub/modules/Microsoft.FinOpsHubs/Analytics/scripts/IngestionSetup_v1_2.kql
@@ -748,7 +748,7 @@ Costs_transform_v1_2()
         ListCost,
         ListUnitPrice,
         PricingCategory,
-        PricingCurrency,
+        PricingCurrency = coalesce(PricingCurrency, x_PricingCurrency),
         PricingQuantity,
         PricingUnit,
         ProviderName,
@@ -762,8 +762,8 @@ Costs_transform_v1_2()
         ServiceName,
         ServiceSubcategory,  // TODO: Populate ServiceSubcategory from ServiceName when missing
         SkuId,
-        SkuMeter,
-        SkuPriceDetails,
+        SkuMeter = coalesce(SkuMeter, x_SkuMeterName),
+        SkuPriceDetails = coalesce(SkuPriceDetails, x_SkuDetails),
         SkuPriceId,
         SubAccountId,
         SubAccountName = iff(isempty(SubAccountId), '', SubAccountName),