AD certificate on Forti-authenticator having 2 authenticator and 2 AD at 2 different location

I have 2 Active directory servers at 2 different locations my Forti-authenticator sync with this AD using LDAPs where i have imported certificate extracted from AD however need to confirm as my both AD sync but are in different location an my authenticator is also in these 2 different location so should i extract the certificate from both AD