Post merge. Current bank acc linking to old bank acc. Disconnect & new one shows. All good until logout/in, then old bank acc link used. AND REPEAT ... tried dozen times!

Hi pjhoulihan, 

Thanks for reaching out! With this situation it may be best for us to speak with you directly and arrange a screen share so we can view the issue in real time. 

One of our Customer Success Representatives will then be able to take a look at what is happening from the back end. 

If you would like a call-back from a representative or talk to us via Messaging, follow the steps below:

1. In your QuickBooks Online, click the Help menu in the upper-right corner.
2. On the Search tab, click an article and select Contact us at the bottom. Then, enter the details of your concern.
3. Choose how you would like to connect with them: either via Callback or Chat.

Please check this article for our support hours: Get help with QuickBooks products and services.

Thanks, 

Rebecca