I had balance of something like .02 or .03 and it was not paid or transferred.
EDIT: oh but now when I go look I see it was zeroed so I guess that makes it official that I won't get it. Not that I thought I would. It was stuck for months.
Yes, old unexchanged balances were explained here:
https://bitcointalk.org/index.php?topic=448649.msg13714576#msg13714576In short: they were post-fork blocks for some small coins from 2015 and even 2014 which were mostly orphan blocks but CM1 software failed to mark them automatically as orphans (because some of them might not be orphans). I reviewed them manually and recovered all valid blocks in January and they were paid out at that time. Invalid blocks were recently corrected to zero after confirming that they were actually orphans.
100.00% of actually valid blocks from CM1 were exchanged and paid out (actually, even more, because when doing manual review I found out that some invalid blocks were also paid out in 2015 before they were marked as invalid; so the pool actually mistakenly paid ~0.45 BTC more than it mined).