The BattleMech HarJel BHJ special appears in both the standard rules Special Ability section (p.46) and also later on in the advanced rules Special Ability section (p.105). It looks like the rules text is slightly different both places, so I'm assuming it was duplicated intentionally. If it is indeed supposed to be in both places, does BHJ still count as standard-rules equipment? Also, when playing with advanced rules, does the text from the advanced rules version get added to the standard-rules text, or does it replace the standard-rules text?
Thanks for the help.