The VMware PowerCLI session will not retain the image profile details upon its exit. If you need to preserve a customized profile that you created, you will have to export it as an offline bundle (ZIP or ISO). When you start a new VMware PowerCLI session, you can just add the offline bundle back to the software depot.
The following procedures will guide you through the steps required to export an image profile to an ISO or a ZIP archive:
Export-EsxImageProfile -ImageProfile "Profile001" –ExportToIso -FilePath C:\AutoDeploy-VIBS\Exported\Profile001.iso