Installing a new Creative Cloud app removes its previous versions on your computer. To keep previous versions installed, follow these steps:
1. Click the gear icon in the upper-right corner and access Preferences.
2. Click Apps tab in the sidebar and enable the auto-update option.
3. Scroll down to the app's name.
4. Click Advanced Options and disable the Remove previous versions option from the pop-up menu.
Use Creative Cloud desktop app to find and install the previous versions of your Creative Cloud apps.