Hi,
It's not possible to do it via the interfaces provided by HikaShop.
What you can you can do is to run a MySQL query via your PHPMyAdmin. Something like this:
INSERT INTO #__hikashop_shipping_price (shipping_id, shipping_price_ref_id, shipping_price_ref_type, shipping_price_min_quantity, shipping_price_value, shipping_fee_value, shipping_blocked) SELECT XX, shipping_price_ref_id, shipping_price_ref_type, shipping_price_min_quantity, shipping_price_value, shipping_fee_value, shipping_blocked FROM #__hikashop_shipping_price WHERE shipping_id = YY AND shipping_blocked = 1
where #__ is to be replaced with your tables prefix, XX with the id of the new courier shipping method, and YY with the id of the home delivery shipping method.
Note that this is not tested. I would recommend testing this first on a copy of the website.