Does anyone know if the transaction (sales order, trasnfer order) has an approval date? I'm looking for that field in a Saved Search

You can usually get off the system notes when the status changed, but I dont think it is natively/automatically stored. Really easy to add the field and store though.

Thanks Sandii, I think it would be better to start storing the value... currently we have an approval workflow, so I guess I will need to create a custom field, and store the date when approved

Yeah if your workflow is already custom, should be pretty easy to add the field to workflow and keep it.