Hide certain user externals from object list drop down menu

Hi,

I have some extremely old externals i've made when I was just starting out Max, and the naming conventions were just not the best.

But I still used them in a load of patches. I'm just wondering if there is a way to make certain user created externals not appear in the object drop down list when you create a new object?

I don't want to remove them from the Max search path (as they are still used in a bunch of patches), i just don't want them to appear when creating new objects.

If not, I know i'll have to manually go though them, just trying to save some time.