OILD resists all attempts to liquidate in paper account

I cannot liquidate OILD in my paper account. the actual ETF was liquidated a month or so ago. In my live account, the liquidation has handled automatically. However, it remains in my paper account and I get a message:

Failed to liquidate position in OILD
asset OILD is not tradable

I would prefer NOT to reset the account as I am trying to accumulate a trading record. Any advice?

Sorry for the issue. Our papertrading dosesn’t currently handle those corporate actions well, and needs some manual process.