As in i cant do it because its sacrilegious or as in it is not possible and will break the frame?
You can do it. It'll ride just fine.
They don't want you to do it because it's not what was meant to. I had a rossin pursuit pista with 700c fork. Originally it was built for 650c but it was perfectly rideable.
Not saying that you should buy a lo-pro in the first place though...
@FFF started
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As in i cant do it because its sacrilegious or as in it is not possible and will break the frame?