I had the same problem with the "LENOVO X13" on Altiris 8.7. Indeed, if the "Boot to PXE" fails, I launch a "Boot to UEFI" task with a network/"PXE BOOT" entry, which is then successful.
However, once the master image is downloaded to the disk, when the "boot to production" task is sent, when the computer restarts, it blocks indicating that the UEFI configuration is corrupted, that it will be reset to default and offers to reconfigure manually or not.
To be sure, that it is not "Boot to UEFI", which alters it incorrectly, I removed it and made sure to ignore the error when "PXE BOOT" appears in the result. But the result is still the same, BIOS detects UEFI corruption.
We carried out tests on several LENOVO X13. Note that on Altiris 8.1, which has the same jobs and tasks (source of the migration of new servers to 8.7), these problems are not present.