The previously separate iCloud “Documents & Data” service will automatically be merged into Apple’s iCloud Drive in May 2022 — but users will have to take steps to continue seeing their documents.
Apple’s iCloud Documents & Data is a system that automatically synchronizes data from different apps and makes it available across all devices. Confusingly, it’s separate to the “Documents & Desktop” iCloud service that makes your documents folder and Mac desktop available, and it’s different to iCloud Drive.
Beginning in May 2022, Apple is attempting to reduce the confusion and streamline the different parts of iCloud storage. The Documents & Data service will be discontinued and all the data in it will automatically be moved to iCloud Drive.
Ultimately, the difference that users will notice is that they will be able to see and access this data directly in the Files app on iOS, or the Finder on Mac. However, while the transition will happen automatically, seeing the data in iCloud Drive will not. Users will have to separately enable this feature.
Read more at AppleInsider.com