This is the thread:
https://forum.islainstruments.com/t/save-as-includes-everything-from-current-project/2957/1
When I read it again, I must admit that you never talked about incremental saving. But this was my own conclusion when you did not want to talk about save-as (memory content) to a new SD card. To me that triggers a train of thoughts of a saving system that keeps track of things that have been saved already (great for better performance), hence the term ‘incremental saving’. But I might be wrong.
@Mickey Can you explain why a save-as to another SD card is not possible? I know that longer samples are not in memory, so they are lost.