Maybe a stupid question but here it goes. So while im waiting for FFXIV to officially release to play it I was thinking about jumping back into FFXI. I have been gone for like 4 years and was wondering since I bought the CE for FFXIV and got a security token for it, is it possible to use my FFXIV security token interchangeably between FFXIV and FFXI? Also If I can't I have 2 FFXIV security tokens cause I had to buy the FFXIV CE 2 times. my other one is attached to another one of my accounts that I haven't been on since september 22 when FFXIV first came out and I don't remember any of the credentials. If I can't use the token I am currently using for FFXIV is there someway I could use the other one that i'm not currently using (I'm assuming i'd have to de-tach it from my old account which I have no idea how to log into.)

Thank you for your time in reading, greatly appreciate any help anyone is able to provide.