We often have various dates that parts of an ASN will arrive. If we have a partially received ASN, then an unreceived sku gets delayed, we have no way to edit the date or info on the ASN. We need the ability to edit unreceived portions of an ASN.
You might try editing Item Receipt records (the child or line-items under ASN's) directly. I believe they are less restrictive in terms of being locked down from editing, i.e., for the scenario you described, after there's a partial receipt. You can edit them in Bulk (either interactively, or with a spreadsheet) too, if that helps.
Thank you for the suggestion. That's definitely an easier way to edit the line items (instead of the ASN table) in general too.