We have previously been repeatedly deploying test computers with Windows Autopilot according to tutorial
We have a group assigned to the deployment profile, and that group includes device objects with the serial numbers of HWIDs extracted and imported into Intune. Each test computer went through the procedure just fine.
Today, I imported another .csv with a new HWID. It gets shown in the [Microsoft Intune > Device enrollment - Windows enrollment > Windows Autopilot devices] blade. However, when I go back to Azure AD portal and try to add that device object to the assigned deployment group, I cannot find its serial number (since it doesn't have a name yet) listed in the [Add members] blade. Filtering by serial number doesn't work.
This wasn't a problem before. I think the only significant difference for this particular computer is that it was previously AAD-registered and joined and later enrolled in Intune as separate activities as a test computer for pre-existing states. But it was retired off Intune, and unjoined and deleted off AAD. So that shouldn't cause any remnant artefact problems, would it?
How can I narrow down and locate that specific device object? Or was there something else Intune needed to send to AAD for that entry to exist, but didn't send for some reason?