The most I could find regarding LLL and Ghostbusters was
this. The use of a meme makes his answer ambiguous to me.
(And look! At the bottom of the page I linked, someone correctly predicted the franchise would be rebooted!
)
But MV Gerhard seems confident at least that the masters - or at least some form of the Ghostbusters 2 score - is attainable. He has a good track record, so I trust he knows what he's talking about. They were reported lost indeed at some point earlier, but I imagine they've been recovered by now.
But don't expect LLL to be the ones to release it. From Gerhard:
"As for Ghostbusters it's a bust for us. We tried our hardest though
Maybe someday they will come out"