What is the "data sources" grid for?

If two sources can both provide the same kind of data (say, weight from both Withings and a Garmin import), Trailwise keeps one source as the owner of each data stream so they never fight over the same numbers.

The grid at the top of Settings > Connectors lists data streams down the side (Activities, HRV, Resting HR, Sleep, Body weight, VO2max, Training load, and more) and your sources across the top. Click a cell to make that source the owner of that stream, tick several streams in one column, or use the header toggle to hand a whole provider every stream it can supply.

When you switch a stream to a new source, you choose what happens to your history:

• Keep existing data: the new source fills gaps and new readings; your old history stays.
• Replace all history: remove the old source's data for that stream and re-source it.
• Switch from a date: keep the old data before a date you pick, and let the new source own it from then on.

For provider-specific scores (like a vendor's own readiness number) Trailwise warns you that two brands calculate them differently, so the values will not line up across a switch.