Where to Place Templates of an Adminhtml Block in Magento

During my sleep I must have subconsciously thought of the solution; it would appear that I was overriding the wrong block for this scenario.

Also it appears to me that Mage_Adminhtml_Block_Catalog_Product_Edit_Tabs_Grouped is either deprecated or just not used any more.

Nevertheless I added a die; statement inside the cores' protected function _prepareLayout() method - lo and behold nothing stopped processing. So I consult my best friend grep and found the following:

$ grep -r -e 'Associated Products' "app/code/core/Mage/"

A core block Mage_Adminhtml_Block_Catalog_Product_Edit_Tab_Super_Group which I then decided to override - this worked (source attached for anyone else that has this problem).

Vendor/Catalog/etc/config.xml:

<config>

    ...

    <global>
        <blocks>
            <vendor_catalog>
                <class>Vendor_Catalog_Block</class>
            </vendor_catalog>
            <adminhtml>
                <rewrite>
                    <catalog_product_edit_tab_super_group>Vendor_Catalog_Block_Adminhtml_Catalog_Product_Edit_Tab_Super_Group</catalog_product_edit_tab_super_group>
                </rewrite>
            </adminhtml>
        </blocks>
    </global>

    ...

</config>

Vendor/Catalog/Block/Adminhtml/Catalog/Product/Edit/Tab/Super/Group.php:

<?php

class Vendor_Catalog_Block_Adminhtml_Catalog_Product_Edit_Tab_Super_Group
    extends Mage_Adminhtml_Block_Catalog_Product_Edit_Tab_Super_Group
{
    public function getTabUrl()
    {
        // Override the tab Url with my controller/action.
        return $this->getUrl('*/vendor_catalog_product/superGroup', array('_current' => true));
    }
}

The tag should be used if you create a module that impacts an other one. and your declaration file (app/etc/modules/Namespace_Module.xml) this:

<?xml version="1.0"?>
<config>
    <modules>
        <MyCompany_MyModule>
            <active>true</active>
            <codePool>community</codePool>
            <depends>
                <Mage_Sales />
            </depends>
        </MyCompany_MyModule>
    </modules>
</config>

so finally your xml will look like

EDIT

to use adminhtml custom theme

if you are using like this in frontend design\frontend\default\yourtheme

then in admin you can also use design\adminhtml\default\yourtheme

you it should work like your custom in admin area please don't put in base else when you going to upgrade your magento version it may create issue.

i hope it will work for you.