imo they should put jump mode in more than one place, and it should be three buttons instead of a menu with shortcut keys for both because this is the third time at least I’ve come across someone who has been unaware of jumpmode.
Read the manual when you come across areas of the program that you want to use, you will find a lot you didn’t know even when you think you know everything at face.
Unfortunately you completely misunderstood. I did read the manual. Several times. Jump mode is used to time a transition between parts. What I am suggesting/want is that when changing parts, there should be an option to have the tail of a part (that is an amount of time/bars/beats) play simultaneously with the next part. So e.g. if you have a part that has a huge reverb, and then you go to a different part somewhere in your arrangement, you wouldn’t want this reverb cutoff. This is the primary part of how game music works in eg Wwise or FMOD.
It should also be possible to export arranger chains with an optional tail per part transition.