MPC's compatibility with programs and sequences
The MPC2000 series will import any of the MPC3000 files without problem. Reason is that the MPC2000 is newer than the MPC3000, so it was made backwards compatible with all the previous MPC's (including the MPC60).
However, getting MPC2000 files into the MPC3000 is another story. The MPC3000 will load MPC2000 midi files, but it will not see the NV data or the mixer changes. The MPC2000 stores this as sysex data inside the sequence, while the MPC3000 stores this in proprietary format inside its own seq file. MPC2000 program files can be converted to be used with the MPC3000 and there is only one peice of software in the world that can do this. See MPC Editor.