Run sales/purchase register for one month by default (#10493)

diff --git a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.js b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.js
index 8d33524..46ed9da 100644
--- a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.js
+++ b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.js
@@ -7,7 +7,7 @@
 			"fieldname":"from_date",
 			"label": __("From Date"),
 			"fieldtype": "Date",
-			"default": frappe.defaults.get_user_default("year_start_date"),
+			"default": frappe.datetime.add_months(frappe.datetime.get_today(), -1),
 			"width": "80"
 		},
 		{
diff --git a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.js b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.js
index 65cec51..b57a7fc 100644
--- a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.js
+++ b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.js
@@ -7,7 +7,7 @@
 			"fieldname":"from_date",
 			"label": __("From Date"),
 			"fieldtype": "Date",
-			"default": frappe.defaults.get_default("year_start_date"),
+			"default": frappe.datetime.add_months(frappe.datetime.get_today(), -1),
 			"width": "80"
 		},
 		{
diff --git a/erpnext/accounts/report/purchase_register/purchase_register.js b/erpnext/accounts/report/purchase_register/purchase_register.js
index cd79531..42b35c2 100644
--- a/erpnext/accounts/report/purchase_register/purchase_register.js
+++ b/erpnext/accounts/report/purchase_register/purchase_register.js
@@ -7,7 +7,7 @@
 			"fieldname":"from_date",
 			"label": __("From Date"),
 			"fieldtype": "Date",
-			"default": frappe.defaults.get_user_default("year_start_date"),
+			"default": frappe.datetime.add_months(frappe.datetime.get_today(), -1),
 			"width": "80"
 		},
 		{
diff --git a/erpnext/accounts/report/sales_register/sales_register.js b/erpnext/accounts/report/sales_register/sales_register.js
index 2ac4ae8..0495976 100644
--- a/erpnext/accounts/report/sales_register/sales_register.js
+++ b/erpnext/accounts/report/sales_register/sales_register.js
@@ -7,7 +7,7 @@
 			"fieldname":"from_date",
 			"label": __("From Date"),
 			"fieldtype": "Date",
-			"default": frappe.defaults.get_default("year_start_date"),
+			"default": frappe.datetime.add_months(frappe.datetime.get_today(), -1),
 			"width": "80"
 		},
 		{