Why does the "Description" field in a rule need to be Fixed. Can it be the original "Description" ?

When importing transactions you can "adjust" bank data to clean the import by adding a code such as "Sponsor" to the description or "Dave Fields - 115" to reflect the invoice. Rules should be able to look for "Sponsor" or "Dave Fields" but still import the transaction details as it was on import to retain additional information such as invoice number, sponsor name.