In the post that you cite above, there was an explanation that went like this:
Those are the steps for manually fixing this problem. Were these steps not clear, or are you trying to create a macro that will do it automatically instead of manually?
I presume you have found a way to stop creating RTF files, right? Or are you trying to come up with a macro that fixes this problem every time you create an RTF file? I'm not clear if the problem is that you want a macro that fixes the problem every time it occurs, or if you are just trying to fix the problem once and you will make sure it won't happen again.