NN-XT to NN19
Right clicking on a sample in an NNXT would show an option to create an NN19 with the sample, including the sample tuning present in the NN19 (for the available parameters).
same thing to transform an NN19 into an NNXT.
Main reason for that is that the NNXT sucks really hard for automation, but is better than the NN19 in many other ways.
in the end a real sampler that supports real time tweaking, automation, time streching, pith changing, etc.. would be better though..