How do I upgrade old Avalanche Bridge (AEB) assets?

Find the asset in the bridge config: https://ava-warden-mainnet.s3.us-west-1.amazonaws.com/bridge_settings.json. Users want to locate the deprecatedTokenContractAddress and wrappedContractAddress address fields associated with the asset.
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Navigate to Snowtrace and connect the wallet the funds are on.
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In Snowtrace, navigate to the deprecatedTokenContractAddress of the token to upgrade, and open the Contract information.
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In the Contract tab, select Read Contract.
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Call balanceOf with the owner wallet address to determine the amount of the token which needs to be upgraded. We call this returned number the balance.
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Next, switch to the Write Contract tab. The connected wallet will appear right below this tab selector.
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Call the approve method with the [wrappedContractAddress, balance] values.
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Approve the Write transaction with the connected wallet.
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Navigate to the wrappedContractAddress, open the Contract section, and switch to the Write Contract tab.
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Call the swap method with the [deprecatedTokenContractAddress, balance] values.
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Approve the Swap transaction with the connected wallet.
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The updated bridgeable assets should now be visible in the wallet.