In older versions of Wwise, inspecting an object in the Wwise tool (that is, adding it to the Transport) while it is connected to a game would sometimes stop in-game playback of all instances of this object. This behavior, which was often inconvenient for mixing, was changed in Wwise 2009.3.
Now, inspecting an object never causes in-game playback to stop, except for one specific case: playback will stop if and only if the object is a Random/Sequence container or a Playlist container, and its children or its playlist are not identical to those that were stored in the SoundBank that was loaded by the game.