1) I believe the title of the 1.4 is being rebranded along with all of Java. I would assume those two titles are really referring to the same exam. They may keep it as separate entries because some people will have one title on their certificate while other people will have the other title.
2) You are eligible to take any currently offered version of SCBCD as long as you have passed SCJP. I seriously doubt if you'll face any opposition or struggle if you pursue the one that the site that claims you are not "enrolled".