Before you retire your PLA 2.x installation and switch to PLA 3.0, you want to make sure that all your assays remain accessible no matter what. That is what the PLA Archiving Assistant will do for you.
To set up the PLA Migration & Archiving Toolkit, you will need to add a small number of files to your PLA 2.x installation manually. Existing files will not be altered. It is important to know that the PLA 3.0 MAT will do nothing that might compromise your validated PLA installation. Therefore, your PLA 2.x installation remains validated.