HP 10 and HP 11 cartridges

I have a printer that uses HP11 cartridges. I also have some HP10 cartridges
(unused).

It's made me wonder if the ink formulations will be the same and if I can
swap the HP10 ink into an empty HP11 housing?

Anyone done this?

I'd give it a go, but I thought I'd ask first, particularly if there's a
difference in ink formulation between these units.

Thanks,

Paul