Yes you can still hold (lock) the door open with the factory supplied strap attached on the shower side of the doorway.
It works very well and keeps the door quietly tucked away in the pocket while driving.
Instead of going to all the trouble of installing a door latch/lock to keep the door open while traveling, I bought one of those inexpensive rubber door stops. If I want the door closed I just wedge the stop in the opening, and presto, door stays closed.
Yea dealer got parts same as the newer models and installed it for me- now I can lock my door in the concealed wall or in the full closed off position , providing privacy from front to rear and to save on dash air cooling square footage.