[Ave]

if I understand your question correctly.......

click scene editor/open and look for your object in the list... on the left hand side of the objects name, under the column with the small eye icon is another place where you can change the view type of a specific object..... make sure that your object isnt set to bounding box here......... that will keep it a bounding box, no matter what you do in the viewport

is this what you mean??

if its only becoming a bounding box when you move the object, then it could be that your display is no able to update quick enough- I had that happening to me a while ago when I had a lot of objects in my scene, I had to go into scene editor and hide a few objects that I wasnt using