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#120
Since you have the Macrium Reflect image, then the MBR to GPT is reversible. From a command prompt in the Macrium Free rescue drive it would be:
diskpart
select disk 0 <- assuming the SSD is drive 0. You can run the list disk command to make sure.
clean
convert mbr <- probably unnecessary as the clean command automatically sets it to MBR
exit
exit
Then restore the image to the SSD.