Ensure that any residual many_many database relationships don't apply to newly duplicated PartialUseDiscoutns
Ensure that any residual many_many database relationships don't apply to newly duplicated PartialUseDiscoutns

markguinn/silverstripe-shop-discount,burnbright/silverstripe-shop-discount,markguinn/silverstripe-shop-discount,burnbright/silverstripe-shop-discount,IgorNadj/silverstripe-shop-discount,IgorNadj/silverstripe-shop-discount