diff --git a/issue4506.diff b/issue4506.diff
deleted file mode 100644
index 1ccf594..0000000
--- a/issue4506.diff
+++ /dev/null
@@ -1,49 +0,0 @@
-diff -r 9cd9f1c27fdd trytond/tryton/trytond/modules/account_invoice/invoice.xml
---- a/tryton/modules/account_invoice/invoice.xml	Mon Apr 23 17:32:58 2018 +0200
-+++ b/tryton/modules/account_invoice/invoice.xml	Fri May 11 13:11:48 2018 +0200
-@@ -132,6 +132,17 @@
-         <menuitem parent="menu_invoices" action="act_invoice_in_form"
-             id="menu_invoice_in_form" sequence="3"/>
-
-+        <record model="ir.action.act_window" id="act_credit_notes_form">
-+            <field name="name">Credit Notes</field>
-+            <field name="res_model">account.invoice</field>
-+            <field name="domain" eval="[('lines.origin.invoice', 'in', Eval('active_ids'), 'account.invoice.line')]" pyson="1"/>
-+        </record>
-+        <record model="ir.action.keyword" id="act_open_credit_notes_keyword1">
-+            <field name="keyword">form_relate</field>
-+            <field name="model">account.invoice,-1</field>
-+            <field name="action" ref="act_credit_notes_form"/>
-+        </record>
-+
-         <record model="ir.model.access" id="access_invoice">
-             <field name="model" search="[('model', '=', 'account.invoice')]"/>
-             <field name="perm_read" eval="False"/>
-diff -r 9cd9f1c27fdd trytond/tryton/trytond/modules/account_invoice/locale/ca.po
---- a/tryton/modules/account_invoice/locale/ca.po	Mon Apr 23 17:32:58 2018 +0200
-+++ b/tryton/modules/account_invoice/locale/ca.po	Fri May 11 13:11:48 2018 +0200
-@@ -1127,6 +1127,10 @@
- msgid "Invoice Tax"
- msgstr "Impost de factura"
-
-+msgctxt "model:ir.action,name:act_credit_notes_form"
-+msgid "Credit Notes"
-+msgstr "Abonaments"
-+
- msgctxt "model:ir.action,name:act_invoice_form"
- msgid "Invoices"
- msgstr "Factures"
-diff -r 9cd9f1c27fdd trytond/tryton/trytond/modules/account_invoice/locale/es.po
---- a/tryton/modules/account_invoice/locale/es.po	Mon Apr 23 17:32:58 2018 +0200
-+++ b/tryton/modules/account_invoice/locale/es.po	Fri May 11 13:11:48 2018 +0200
-@@ -1123,6 +1123,10 @@
- msgid "Invoice Tax"
- msgstr "Impuesto de factura"
-
-+msgctxt "model:ir.action,name:act_credit_notes_form"
-+msgid "Credit Notes"
-+msgstr "Abonos"
-+
- msgctxt "model:ir.action,name:act_invoice_form"
- msgid "Invoices"
- msgstr "Facturas"
diff --git a/series b/series
index 41c5e6b..295babb 100644
--- a/series
+++ b/series
@@ -3,7 +3,6 @@ babi_multiprocess.diff # [trytond] babi multiprocess
 issue3932.diff # [account] rule account move and account move line by company
 tax_update_unit_price.diff # [account] Add the update_unit_price control on parent tax
 
-issue4506.diff # [account_invoice] Add credit invoices keyword from account.invoice
 issue8479.diff # [account_invoice] missing invoice payment method rule by company
 analitic_line_company_rules.diff # [analytic_account] Not selected root accounts in analytic account lines