Forgive me if this has already been answered. I don't remember seeing it. Do we know the sources used for this LP set? I assume it has to be all digital given the Universal fire.
Almost certain they were pulled from the entire batch of transfers for the Remastered Classics / 30th+35th Japanese box sets. I'm working on trying to nail down some more details.
And to clarify, the tapes destroyed at Universal were original multitrack masters and not 2-channel mix tapes, so there would be nothing affecting this release that would be in any way related to whatever was lost in the fire. And for that matter, we're pretty sure most of the original multitrack stuff was transferred beforehand anyway so nothing was truly "lost".