QB Issue Resolution:

That’s correct it puts it back just as the bank he brought it in. That’s what happens when you click undo.

Resolution for Issue 'I moved stuff from in quickbooks back to review because my wife didn’t know how to assign accounts yet. When I did that it removed all attachments and classes. why?' available: Yes (Solved).
Source: Intuit Community forum.

I moved stuff from in quickbooks back to review because my wife didn’t know how to assign accounts yet. When I did that it removed all attachments and classes. why?: this 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 issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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