This should be impossible no?
I close my bitcoin core 13.2.
I install and run btcABC with datadir="X:/mybitcoincoredatadir" to save myself a few hundred gigs of duplicate chain data.
I create a BCC deposit address on bittrex.
I send .005 BCC to the address while 8 days behind on sync.
I wait for it to broadcast....
wait....
wait....
still no broadcast after an hour so I grab the raw tx and open the console and do "sendrawtransaction blahb9blasdhfblahb9dsfh8486blah3145926etcetcetc"
seems to finally broadcast.
Now showing as not in mempool, no confs.
I check tradeblock and blockchair and lo and behold:
It's showing on bitcoin chain but not BCC.
Good thing I don't control that address on the bitcoin chain ell oh ell.

I saw the "attempting to spend btc that are affected by not-yet-displayed txs will not be accepted" but fail to see the relevance as these are from inputs "already displayed"---a few weeks old that is. What the hell happened here? Is this client still so alpha that something as basic as sendrawtransaction is still propagated through the bitcoin chain? I'm not asking rhetorically or trying to be flippant here---I'd really like to know how this can be.