When working in different DAW projects using the same template for SPAT, loading or saving may cause the Send / Return in SPAT to be duplicated.
How To Merge a previous Send / Return with a duplicate one
- Select all local audio path Send/Return objects in red (those that are saved in the SPAT project and connected to the Room).
- Click on the Convert To Hardware IO button, in the panel to the right.
Now the local audio path send/return objects are converted to hardware inputs instead.
Merge one Hardware IO with the corresponding active Send/Return instance
- Select one of the recently converted hardware IO objects and also select the corresponding local audio path instance.
- Click on Convert Hardware To Send/Return.
This will merge the two items into a single object, which is connected both to the DAW and to the Room.
After the conversion is ready, don't forget to save a new copy of the SPAT project. One explicit SPAT project for each DAW project is a good practice to avoid mixing things up.