Upgrading a basic public IP address to Standard SKU for Azure Express Route Virtual Network Gateway

hi,

There is a well known announcement from MS that the public IP basic sku is going to be retired in end Sep 2025.

I have a Express Route Virtual Network Gateway with basic public IP.

The Express Route Virtual Network Gateway has "Standard" SKU, which is a non-Az enabled Gateway SKU.

I read the some of the guides in MS, but there is some conflicting information on the migration.

(1) In

https://learn.microsoft.com/en-us/azure/virtual-network/ip-services/public-ip-basic-upgrade-guidance

It says "New ExpressRoute Gateway is required. Follow the ExpressRoute Gateway migration guidance for upgrading from Basic to Standard SKU."

(2) Then in

https://learn.microsoft.com/en-us/azure/expressroute/gateway-migration

The guided gateway migration experience supports:

Non-Az-enabled SKU on Basic IP to Non-az enabled SKU on Standard IP.

Non-Az-enabled SKU on Basic IP to Az-enabled SKU on Standard IP.

Non-Az-enabled SKU on Standard IP to Az-enabled SKU on Standard IP.

Notice that the first point say that for non-Az-enabled SKU, we can just upgrade the public IP from basic to standard sku.

So, i am not sure if

(1) a new gateway is required

or

(2) we just press the link to upgrade basic IP to standard IP ?

I don't have a spare lab environment to test this for Express Route, so it can be very dangerous in production to do this action without any understanding or fall back plans.

Please help.