I'm pretty sure I followed up with this but just in case anyone doesn't know:
Poloniex got back to me on 11th Sept with this:
Hi catbref,
Thanks for bringing this to our attention. The engineering team has cleaned up the missing withdrawals. Please let us know if you hear of any more issues.
Best,
Poloniex Support Team
So if you've have a pending withdrawal ticket before the 11th, or you withdrew but the funds 'disappeared', then it might be a good idea to open a fresh ticket with Polo to withdraw your Qora to your wallet.
Don't forget to use the latest release v0.26.11 instead of the old v0.26.0 (or worse) as there have been tons of bugs fixed since then.
If anyone does open a fresh withdrawal ticket, please report back with success or otherwise.
In other news, on Friday we had a Qora v2 node synced up to date with blocks fed from a v0.26.11 node. The main hurdle to this milestone was the [re]implementation of CIYAM AT library.
The previous CIYAM AT code was too tightly integrated with Qora and MapDB to re-use. The new library is built to be coin-independent so can be imported into other coins, which allows more atomic cross-chain transfers (ACCT).
BTC-Qora ACCTs have been demonstrated but we still need a user-friendly way of building them, maybe a website, maybe a Qora2 plug-in.