I'm glad to guide you today so you'll be able to delete the BAS as lodged.
At this time, I recommend reaching out to our Support Team to assist you further with deleting BAS Market as lodged. They have the means to unlodge/undo a lodged BAS in QuickBooks Online.
To contact support:
Or, follow the steps provided in this article.
Get back to me there's anything you need assistance with. I'm a post away to help. Have a good day!