In https://docs.redhat.com/en/documentation/migration_toolkit_for_virtualization/2.6/html/installing_and_using_the_migration_toolkit_for_virtualization/migrating-vms-web-console_mtv#running-migration-plan_mtv

Add a warning that vMotion (incl svMotion) must be disabled for VMs that are being imported in order to avoid data corruption.

We have an indirect evidence that other backup solutions are explicitly preventing vMotion, storage vMotion and relocation during backups adding an entry to VPX_DISABLED_METHODS table in vCenter.