Yes, but in version 5. I can mail it to you. I've succeeded to find the two relevant topics here:
http://www.enworld.org/showthread.php?t=132737 and
http://www.enworld.org/showthread.php?t=134257 . At least the latter one is related to our topic.
The IH hasn't been released yet - only an inofficial version of the Bestiary, but it doesn't contain the CR system. This will be released in the Bestiary 2 (whenever this will see the light). But another part of the IH will contain a few rules, which will deal with some inconsistencies of the ELH.