Best practice for handling "missing from source" assets?

Hello,

Is there a best practice for handling “missing from source” assets? For example, we have renamed some columns in a table and now the old columns show as a status of “missing from source”. This would also apply if we moved a table from one schema to another as we made a mistake with a mass cloud migration. Should we delete these “missing from source” assets or is there a flag to eliminate these when refreshing the metadata?

Thanks!