How to delete unhosted insulations, impossible to select

This failure occurs in circumstances such as updating the model to a higher version of Revit MEP or in case of an error among the ducts and pipes and the solution that the progrma offers is delete them. In these cases, the isolations occasionally hosted by the ducts or pipes are maintained in our project but we are unable to manage them in any way. Here is a brief tutorial for deleting them.