What does 717 VNAV steering and auto-flight do at this coded E/D?
The LNAV follows the Missed Approach coding eg RWXX>VOR>Missed Approach Track, and the VNAV levels off at the inserted MDA/DDA (no "fly-away" logic, unfortunately, unlike IAN). We do not leave it in LNAV and VNAV after the MA waypoint as we are doing the GA then, but after re-engagement of LNAV and VNAV when established in the missed approach, the Autoflight will follow the missed approach including climbing, as per the coded plan.