Changing instrument w/o erasing track data

This must be very simple, but did not find it. A track has data and has an instrument, a sample, at position 00 of the top right box. I want to keep the same data and change the sample at position 00. Right-clicking on the sample name and delete will also erase track data. Is it possible to tell Renoise to simply forget about the sample sound and leave the track data intact ? - Thanks !

Yes, instead of deleting the sample, you can right-click and choose “clear” instead which will clear the sample & leave the instrument in place, along with the note data.

You can also just load a new sample / instrument over the existing one, and the note data will stay in place.