Depending on what your idea is, you might have to redo the rear hydraulics.
If the primary bar stays at roughly the same height as your current bar, you’ll be fine. If you want to go higher, to avoid problems with the rear hydraulics, you need to choose a butterfly bar that’s narrower than the original. Luckily for you, the Haibike Trekking has a rather wide bar.
To see how much room you have, turn the handlebars at a 45 degree angle with respect to the top tube. Then observe the rear hydraulic cable. If there’s wiggle room you can use that.