Hello Anders!
The keyswitch dump file cannot change note durations. That must come from somewhere else. The file only provides keyswitches for the expression tool. Importing it doesn't do anything with your score or the playback of it.
Automatic articulation changes come from Human Playback Preferences. So when working with our keyswitch dump file, I would either turn them off or load a set that doesn't interfere with your used libraries.
To change articulations with help of the key switch dump file, you will have to add the keyswitches manually to your score. For details please refer to the instructions that came with the downloaded file.
If dynamic marks don't work correctly, please check that the Human Playback Preferences/Dynamics settings match with your dynamics settings in VI Pro and Synchron Player (Velocity and/or VelXF and matching CC).
Best regards,
Andi
Vienna Symphonic Library