When syncing — Replace server data or Replace local data?
- Replace server data — pushes your local 2Do tasks up to the sync service. Use this when 2Do has the right data and the server is empty or out of date.
- Replace local data — pulls tasks from the server down to this device. Use this when the server has the right data.
Pause before choosing. If your device is empty and you choose Replace server data, the empty device can overwrite the cloud copy. Always pause and think about which side has the data you want to keep before confirming. When in doubt, share / export a backup first.
Where to set this any time
Beyond the automatic first-sync prompt, you can pick the next sync's behavior manually whenever you need it:
- iPhone / iPad / Android — Settings > Sync > Next Sync Action.
- Mac — 2Do > Settings > Sync > Next Sync Action.
Dropbox and CalDAV offer Sync normally, Replace server data, and Replace local data before triggering a sync. Toodledo offers Sync normally, Replace local data, and Merge sync. After the sync completes, the option resets to Sync normally automatically.
Use Merge sync only when you need to combine local 2Do data with Toodledo data. It may create duplicates if both sides already contain the same tasks and lists.