[Qemu-devel] Can I convert backing file to internal snapshot?

[lampahome]

I have two qcow2 A & B, and A is backing file of B.

Can I convert both A&B to one image and containing data of both?
ex:
one new image will contain data of A and B. When I check it by qemu-img
info, I can see one snapshot in the new image.

thanks