Update and a further concern.
The LLC has been dissolved. I had a personal guarantee for two of the three people involved in the LLC. One is silent and I've never met. One of the two, who I'll call Alpha, has been more insistent (half a dozen phone calls and 2 emails) in taking other the space than the other, who I'll call Beta. Alpha has formed a new LLC. Beta inquired about the space (1 phone call) but is apparently looking elsewhere since he accidentally sent me an email clearly intended for a real estate agent in Beverly Hills. Plus apparently Alpha is one who handled administrative tasks. So I think my original questions have been answered/solved.
New concern: Alpha, the heir apparent, wants to transfer the deposit from the old LLC to the new lease with the new LLC. The problem of course is that the deposit belongs to the old LLC and, according to Alpha, the bank account has been closed. I plan to call Beta and ask if it's okay to handle the deposit this way. I suspect this will be okay since Beta hasn't mentioned or asked about the deposit. But if not, I'll be back here asking how to handle the situation.