Yes, it is possible.Can you pls explain why cloning to MBR is a problem.
this link says its possible: http://reflect.macrium.com/help/v5/how_to/conversions/convert_an_mbr_disk_to_a_gpt_disk.htm
it just indicates that in GPT there will be a small 128MB partition at the start and I should place all the partitions after that partition
Many things are possible.
Can your new system boot from an MBR formatted NVMe drive?
If it fails, you still have the original to try again.
And you always have the fallback of a full fresh install.