You do understand that there are different "statuses" you can give a card on the site:
1 - Collection
2 - Want List
3 - For Sale/For Trade
4 - In Transit
5 - In Transaction (but this is system-generated only, you can't manually add a card to this status
If you have multiple listed in status #1, by using the "Move all duplicates to For Sale/Trade list", that will move all but 1 of each the cards with status 1 into status #3 - 1 copy of each will remain in status #1.
Is this part of the instructions clear?
Please explain which part of this *I'M* not getting. If I'm wrong here, I'm sorry.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 10/25/2023). I have added a large portion of my inventory to the site, and currently have trading turned off (details are in my profile). I have (finally) unearthed my 2 very large boxes of Star Company minor league sets and they are available (email for details).