Did you disconnect them from the bank feed?  Sometimes if you have  a lot of them, you have to click the arrow on the right to scroll to the remainder of them.

Resolution for 'Banking View issue: 'In Banking View, I do not have all of the banks at the top anymore.' available: Yes.

The Banking View issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the Banking View issue yourself by looking for a resolution described in the article. If it is a complex Banking View issue or you are unable to solve the issue, you may contact us by clicking here or by using other Banking View support options.

For more information about resolving issues related to Banking View in Quickbooks/QBO or to get support for the issue 'In Banking View, I do not have all of the banks at the top anymore.', click the link below: