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.
that's what i got from polo yesterday!
Thanks for contacting our support team, and thank you for your patience in regards to this open case.
QORA was delisted from our exchange and its wallet was removed from Poloniex. At this time, it is not possible to access this coin. Your balance is now archived and is no longer available for withdrawal.
Circle aims to provide customers with the most innovative projects that fuel the industry and to ensure the assets meet the high standards customers deserve, which is why we created the Circle Asset Framework. Under the Circle Asset Framework, we consider listing or delisting assets based on whether the asset has sufficient trading volume, whether it aligns with the core tenets of the crypto community, whether it is backed by robust technology, whether it creates real value for a meaningful number of customers, and whether its backed by a strong, experienced team. In addition, we also consider other factors such as new guidance from regulators.
While we understand your frustration, this asset doesn't align with our Circle Asset Framework. If it becomes accessible again in the future, we will be sure to let all affected customers know.
Please let us know if you have any additional questions about your account in the future and we will be happy to help.
Best,
Poloniex Support Team