xref linetypes

If you have a drawing xreferenced into another drawing and want to change the linetype of a layer of the xref'd drawing, so long as the linetype of the xref'd drawing is continuous you can change it. But if the xref'd drawing layer linetype is already defined as something else, like hidden, and you try to change it, it won't let you.Is there some way to fix this other than having to go into the original drawing and changing all of the linetypes of the layers to continuous and then re-xreferencing the drawing again?Thanks.James VanZandt