Ahhhh, okay! Thank you -- I can see how that's really confusing.

If you click the remove button in the vault it will pop up with a selection for you - remove 1 (if you have multiple), remove all, or remove a specific amount (which you can then put in).

I'll try to make that more clear!

Because it saves needing to have multiple links there. The button works, and allows you to remove how you're looking to move items from your vault. I will make it more clear, but that UX is likely to stay.