WordPress Site Switch (Permalinks Question)

I am in the process of switching 2 WordPress sites one on a main domain and one on a subdomain both under one contract. I am switching to a new contract with the same provider and am not changing the domain, on both sites all posts from both sites get posted to Facebook… my question is if I transfer both WordPress sites to this new contract will I have to change all permalinks on my Facebook pages or will they remain the same when I switch