(If we periodically backup the files in the iCloud Drive QuickPlan folder, manually or via third party backup apps, there is no critical risk to directly access iCloud drive project, we can skip following risk section)
iCloud Drive acts like a shared folder on the internet, with the capability to automatically sync changed files to all the involved iOS and macOS devices. Users feel comfortable because after changed the file on iCloud Drive, iOS and macOS will help to sync the changing to all the other devices. But there is risk if we can’t use the service well.
Give an example, we have a very important file stored on the iCloud Drive, and we have some iOS and macOS devices can access the iCloud Drive using same iCloud Account. Incidentally, we changed the file on one device incorrectly, and we find there is no backup to restore it from the changing.
We may think we can get the old version from another device, but when we try it, iOS / macOS may already completed to automatically sync the changed file to all the other devices. (iCloud Sync is coordinated by iOS and macOS systems, not by the apps (so not by the users), after the app (you) saves the file, the OS system will control when and how to sync)
Following we suggest to mitigate the risk if we have very important assets on iCloud Drive – not only for QuickPlan. Of course, if the data the app accesses is not that important, or we have the backup of the important assets, this risk will not be that critical.
if one day, iCloud Drive will support “version” control, this risk will not exist