account assignment category Asset to Cost Center in po items

Hey,

We have a Question how to handle this Exception:

We have purchase order items with the account assignment category "A - Asset" and we have created Asset master data. Later, this assignment category is changed to "K - Cost Center". But the Asset Master Data is still there.

How to handle this in the future? Do we have to delete the purchase order items with the account assignment category "A - Asset" and have to create new items with assignment category "K - Cost Center"?

Thanks!