Well, you can save it in a preset, and then use the freeze feature to transport it to another instrument. But likely another instrument will require another spectrum profile...

Hi Philippe,
I have done this. It just seems a bit long winded. Especially if you just want to quickly try ones you like.

Is there also a limitation with the current tools? Doesn't the IH of upper partials on a piano mean that editing odd or even partials may not accomplish what might be expected?

(But of course, I still also want to be able to edit the pitches of each partial. Perhaps for an advanced, more expensive, Designer edition of Pianoteq. )

It could be useful to have some more tools for spectrum editing (edit only odd, only even, etc. harmonics)...

You do have some tools in the dropdown menu on the right side: simple draw, haircut, fill only, harmonic1, harmonic2, etc. There's also the very useful "rescale" button that I use very often: make a variation and then adjust its intensity by clicking on this button and moving the mouse up and down.