Taktik, please have a short look at this.
Install the tool: https://forum.renoise.com/t/new-tool-jump-to-from-send/34051
Bind the two keys. Now jump from a track to a send. The undo buffer is now flooded with all color fading colors.
What about a Api function " Disable_Undo_once ". , so only for the next operation, there will be no undo written? It’s also a problem in other tools, too.