Thanks, but let me give you a bit more detail. Start with new, blank project. I drag Vita Synth to track 1. This loads a default midi track with notes already in place and is 4 bars long. If I drag the object out to 8 bars and double-click it to open the piano roll, it is only 4 bars long, even with the top yellow bar dragged to 8 bars. If I delete the object and open a blank one it is only 1 bar long and cannot be changed. Very frustrating.

Steve,

The MIDI file imported by the program is an 8 bar loop (accordion for ex.). If you drag it out, all you are doing is repeating it, thus when you view it in the piano roll, it stays at 8 bars.

In a blank area on a track, with or without an instrument, right-click and select Create a new object, Create a new MIDI object, and select a length. You should now be able to extend this object to the right.