I don't think it's changed. Was the downloaded item grouped? Usually they are from the warehouse, and sometimes they contain objects that are a long way away from the item you're wanting to move on the scene. I'll typically double click to work on the grouped items and delete all but the object I'm wanting to move. That gets the group down to a size that only encompasses the object I'm wanting.
Post a link to the warehouse item and I'll see if I can help.
To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault