diff --git a/frappe/public/js/frappe/form/grid.js b/frappe/public/js/frappe/form/grid.js
index acb174c5e6..68321fdd2e 100644
--- a/frappe/public/js/frappe/form/grid.js
+++ b/frappe/public/js/frappe/form/grid.js
@@ -123,7 +123,6 @@ export default class Grid {
 		this.setup_add_row();
 
 		this.setup_grid_pagination();
-		this.update_idx_and_name();
 
 		this.custom_buttons = {};
 		this.grid_buttons = this.wrapper.find(".grid-buttons");
@@ -146,17 +145,6 @@ export default class Grid {
 		}
 	}
 
-	update_idx_and_name() {
-		this.data.forEach((d, ri) => {
-			if (d.idx === undefined) {
-				d.idx = ri + 1;
-			}
-			if (d.name === undefined) {
-				d.name = "row " + d.idx;
-			}
-		});
-	}
-
 	set_doc_url() {
 		let unsupported_fieldtypes = frappe.model.no_value_type.filter(
 			(x) => frappe.model.table_fields.indexOf(x) === -1
@@ -478,6 +466,12 @@ export default class Grid {
 			if (!d) {
 				return;
 			}
+			if (d.idx === undefined) {
+				d.idx = ri + 1;
+			}
+			if (d.name === undefined) {
+				d.name = "row " + d.idx;
+			}
 			let grid_row;
 			if (this.grid_rows[ri] && !append_row) {
 				grid_row = this.grid_rows[ri];