bug when importing products

[Ali-HA]

null value exception is raised when editing an imported product.
the excel sheet is exported from NopCommerce (4.3). the column DownloadId values are zero instead of being blank. GrandNode does not check for imported values. When trying to edit the item a null value exception is raised as the object value for DownloadId does not exist.
Same for SampleDownloadId
my workaround was to simply clear the 0 values in those columns before importing into GrandNode.

[PatrykPorabik]

Well, GrandNode is not nopCommerce, so it's obvious that the excel file exported from nopCommerce, won't work in GrandNode.