Why are drafts created in the wrong eBay store?
Drafts are created in the store chosen in Publish on in the Create New Drafts popup, which starts on your Main Store: if you don't change it, they go there.
The Main Store is not the one you usually use
Every time you open Create New Drafts, Publish on starts from the Main Store (if it is visible, otherwise from the first visible store). To change it, open Switch eBay Stores (store icons at the top of the side menu), choose the Main Store and click Save Changes (Switch eBay Stores). The choice applies to the browser you are using.
The store you want is not listed in Publish on
Publish on, Create drafts in in Winning Products and the eBay Store operation of Edit Drafts only list visible stores. Tick the store in Visible Stores from Switch eBay Stores and open the popup again.
You created the drafts from the Chrome Extension
With the Droopify Chrome Extension, drafts go to the store chosen in the extension window, not the one in the dashboard (Chrome Extension).
Moving drafts already created
Select the drafts on the Drafts page, click Edit Drafts and add the eBay Store operation (Bulk Edit Drafts). For a single draft, change the eBay Store field in its edit popup (Edit a draft). If the same product is already in the destination store, the draft is not moved.