in some cases, the problem with transmitted properties on MP is that someone rooted the property with a leading '/' which then leads to polluting other MP players' crafts' property trees... leaving the leading '/' off keeps the property within the craft's properties where it belongs instead of it stomping over other folks' properties...
and it is certainly possible for the change in MP protocols to see things like this if the packet is truncated because it is too large... some craft send a lot of data over MP...