Serial #s on install jobs being deleted

New Contributor II

Anyone having issues with install jobs, when the techs close out the job, it prompts them to delete the equipment before closing out?  The office puts the equipment, model and serial #s, on the invoice for install jobs, but then the techs have to delete them to close out the job.  Then the office has to put them all in the system but we cant get it on the invoice if it has already been exported.