Upgrade To 4.9.2 Sp2 And I Have Problem

The old way of selecting categories on the product editing page is now available again. In version 4.8.1 we introduced a new mechanism of selecting categories, which requires typing a part of a category’s name. However, some of our clients found it more convenient to use the old category tree. That’s why we have added a button that will allow you to summon the old pop-up with the category tree and use the old mechanism of adding categories, if necessary.

my question when i upgraded to 4.9.2 this button gone. Can any one help me please???