I have a pair of boots,  and I switched out the image texture files, and made some procedural textures instead.  I saved the figure in a new Runtime, but now every time it loads it tries to search for the original  JPG for the texture.  How do I get  Poser to recognize that the image file is no longer associated with this figure?

This isn't limited to this particular figure, I have had it happen before, and would like to know how to fix it on not only this file, but on future files that have the same problem. 

Thanks in advance.