Updating and Expiring Supplier Price List

Hi everyone, needing your guidance on mass update and expiration of supplier price list.
When we use the import tool built on Epicor for supplier price list, it will upload a new price list but not expire the current ones.
We have lots of parts numbers to update so expiring part by part won’t be very efficient as it will probably take us months to do so. Can anyone share tools they have used or templates? Thank you and appreciate the help in advance.