Hi Derek,
Does your kN2600 take SD Cards? If it does, I would just call up the Stride Piano on the KN7000 (tweak it' if you need to), save it to a Panel Memory and then save it to your SD Card.
Having done that, load the SD Card into your KN2600 in the usual way. I'm not sure if it will work because to be honest, I've never seen a 'live' KN2600 and don't know much about it, but that's how I would do it.
Good luck!
Audrey