What E-on explains, is that some of the objects have always been locked, but we never noticed it before. And this has been discussed here a lot too. All original 100% Vue content ( plants, materials, boolean objects, atmospheres...)is exportable, some objects made by third party are locked, because the creator of said objects decided so. Now lets' wait and see if the new trees we'll buy with our vouchers will be exportable with the next update before we go on again on the subject.