This was unfortunately intended by the Devs because of something on the line of making mistakes in trading in mats on the wrong augment than the one you desire to augment

Quote Originally Posted by Sicycre View Post
Hello!

Unfortunately, we have no plans to make this adjustment.

The reason being we wanted to lessen the risk of mistakes happening when trading in multiple items at once. For example, if you turned in 20 and selected the wrong stats, then it would have been a lot worse than trading in one and making a mistake.

We hope you understand our decision when it comes to trading items concerning Ambuscade-related cape augments and thank you for your feedback!