I am not using QuickBooks online. I use the QuickBooks Pro 2020 desktop version. I use the transfer window under banking. I have been doing it for years and years and have never had this problem. What happens is it shows up in the register from which it was deducted but it does not show up in the register into which it was transferred. If I run a transfer report from the report center, 

it does show up there. The same thing happens in the opposite direction when using that same register that doesn’t show the transfer. Therefore I think it has to do with that one account within the company. Unfortunately it is my main checking account!