If im not mistaken i had told you in a previous post on the ARN issue. Delete the asset completely and reinstall it to see if that helps it. If your only missing the ARN on one loco as opposed to another JR loco its not the ARN library causing the problem, its the specific loco with the issue.
Also do NOT open these older items in CCP to make modifications to them ( like the number range for instance, horn, etc) as this will break the ARN specifically on the older bits from us like the UP items you purchased. If you did this on these two that is your problem here why the ARN doesnt work.