Feature Request: Product Barcodes: Allow "no unit" on editing

[Saturo78]

In order to use "default quantity unit purchase" and "default quantity unit consume" when scanning barcodes it is necessary to leave the quantity unit of the barcode blank and only enter the amount.

Otherwise the "default quantity unit purchase" or "default quantity unit consume" from the masterdata is getting overwritten with the one assigned to the barcode.
When using the android app it is possible to leave the field blank but not with the server.

Or have I got something wrong?