Deleted printers are still showing up

So we recently switched from Ultimaker 2s that were running off of Raspberry Pis to Dremel 3D45s. All the Ultimakers were deleted from the workgroup but one group of them still shows up as queueable even though both the printers and the Pi are disconnected. These printers do not show up in the organization admin printer tab

Hello. We have removed these printers. Please check it. We will look for possible reasons of problem.