The xref manager is a great tool for repathing xrefs, but I was wondering if there was a tool for changing xref names in the same way. For example, I have over 50 drawings that xrefed the drawing called a-block1.dwg and a-block2.dwg. The drawings have been renamed b-block1.dwg and b-block2.dwg. I want to be able to do a string replacement on the drawing name (from "a" to "b") on multiple drawings in a folder - in the same way you can do it with the paths. Is something already out there? or is there a lisp they can be written for that? Any direction would be helpful, Thanks