How do I switch between Cloud Sync and iCloud or Google Drive?

Open Settings → Device Sync and choose Cloud Sync, iCloud (Google Drive on Android), or Off. Switching keeps everything on this device and combines it with your devices on the new option; nothing is replaced, and nothing deleted on your other devices comes back. Leaving Cloud Sync removes this device's copy from WitnessWork's server; your other devices on Cloud Sync keep what they've already synced from it. Leaving iCloud or Google Drive leaves this device's last copy there, and your other devices keep syncing with each other but not with this one. A device that already used iCloud or Google Drive before Cloud Sync keeps it, and Settings offers the switch once. To sync all your devices together, choose the same option on each.