Have you just upgraded your Shapeoko Pro with its stock Z-Plus carriage to a brand new HDZ carriage?  

Here's a list of parts you'll need to continue to use your z-independent dust boot:

Required:

• HDZ Plastics:  https://pwncnc.com/products/bracketing-plastics?variant=39796056096907
• HDZ Screws:  https://pwncnc.com/products/bracketing-screws?variant=39796074381451

Note:  You will need to swap the tracks on the end of your support arms.  Instead of the horizontal tracks sweeping forward, they will now sweep backwards.

Installation instructions can be found here:  support.pwncnc.com/kb/article/54-bracketing-for-shapeoko-pro-w-hdz/