Farming OG plots and pool plots with different key

Can I farm my old plots with solo and new pool plots that were created with a different key from the same GUI?

Yes, of course.
Im doing it eg.

So I just need to log in with my different private key once, and in the background both services are working, the one with solo farming and the other with pool farming, both are with different keys.

I wouldn’t be so sure about that. Because if this were true than you could use plots from another farmer. AKA buy them off someone selling them?

I think that is why you need to use your Key when you create the Plot.

I use my keys, but I have 2 wallets. The first wallet is my solo farming plots, the second key is my pool farming plots.