Hello PFI,
I am so sorry to hear that you are unable to find your transaction, I'll try my best to offer some guidance to assist you. I find when I am trying to find a specific transaction quickly the magnify search bar works best because it will go straight to where the transaction is hiding.
To assist you with working with QuickBooks Online Advanced search please reference the link below:
Search For Transactions
https://quickbooks.intuit.com/learn-support/en-ca/getting-started/search-for-transactions/00/262316Once you are able to locate the transaction with the advanced search it might help understand on which account it landed in.
I hope the advanced search works to help track down you transaction! Please do not hesitate to reach out, I'd be more than happy to assist.
Have a great rest of your weekend.
Kindest Regards,
Lourdes Fernandez