diff --git a/api/alembic/versions/sql/0051_upd_form_cells_subtree.sql b/api/alembic/versions/sql/0051_upd_form_cells_subtree.sql
index 5f8befe..53f754d 100644
--- a/api/alembic/versions/sql/0051_upd_form_cells_subtree.sql
+++ b/api/alembic/versions/sql/0051_upd_form_cells_subtree.sql
@@ -2740,3 +2740,50 @@ BEGIN
 END;
 $function$
 ;
+
+
+CREATE OR REPLACE FUNCTION v3.get_form2_ahr_satellite_delta(p_form_id integer, p_source_sheet character varying, p_source_row_id integer)
+ RETURNS TABLE(row_type character varying, depth integer, sort_order bigint, data jsonb)
+ LANGUAGE sql
+ STABLE
+AS $function$
+    WITH target_lines AS (
+        SELECT m.target_line_id AS line_id
+          FROM v3.form2_ahr_satellite_line_source m
+          JOIN v3.budget_line bl ON bl.id = m.target_line_id
+         WHERE m.source_sheet = p_source_sheet
+           AND m.source_id = p_source_row_id
+           AND bl.budget_form_id = p_form_id
+           AND p_source_sheet IN ('AHR_RENT', 'AHR_UTILITY', 'AHR_SECURITY')
+
+        UNION
+
+        SELECT bl.id AS line_id
+          FROM v3.limit_template lt
+          JOIN v3.expense_item ei
+            ON ei.sheet = 'AHR'
+           AND ei.direction = 'Support'
+           AND (
+               (ei.depth = 3 AND ei.item_id = lt.expense_item_code)
+               OR ei.num_group_id = lt.expense_item_code
+           )
+          JOIN v3.budget_line bl
+            ON bl.budget_form_id = p_form_id
+           AND bl.expense_item_id = ei.id
+           AND bl.name = regexp_replace(
+               lt.name,
+               '^[[:space:]]*-[[:space:]]*',
+               ''
+           )
+         WHERE p_source_sheet = 'AHR_LIMIT'
+           AND lt.id = p_source_row_id
+           AND lt.row_type = 'LEAF'
+    )
+    SELECT r.row_type, r.depth, r.sort_order, r.data
+      FROM v3._form_affected_rows(
+             p_form_id, 'AHR',
+             COALESCE((SELECT array_agg(tl.line_id) FROM target_lines tl), '{}'),
+             'Support', NULL) r
+     ORDER BY r.sort_order;
+$function$
+;