I have 5 VMs that are tagged as Orphaned VMDKs I migrated each one to different datastore. However, upon checking on the said datastore VM's vmdk files are still on it.
Welcome to the Community,
please provide some more details, like the vSphere (vCenter/ESXi) version/build that you are using, and how exactly you migrated the VMs (e.g. cold/hot).