[...] I think it's possible this way: Click the add to Wantlist button on the order details page or after checkout. Or add the items in Wantlist icon in the settings of the [...] (65 months ago, Jan 19, 2019, to Inventories)
[...] I think to avoid errors. The more different sets in one go the more likely to have errors. [...] You can use Brickstock and upload the file. (65 months ago, Jan 15, 2019, to Suggestions)