SLA Asset Retirement

We modified the SLA so the asset would use the accounting distribution from the Asset Category instead of deriving it from the Books Controls. This is working fine, but when we retire an asset it is deriving the accounting from the book controls, not the account combinations used when the asset was books to the balance sheet and depreciated. How do we fix this so that the asset is being retired using the same accounts that we used when the asset was placed on the books.

Thank you for any help you may be able to provide.