File Share Encryption

I have a client that is merging two companies Active Directories in to one Forest with one DNS.  There are two companies will be re-branded as one unit.  The problem that I have is they both have their own PGP Clusters and my questions is:  can you "best Practise" have multiple PGP cluster in one organization?  I can see issues with key look-ups but can you have separate PGP clusters delivering WDE?

The best way to do this would to dump one of the PGP UN clusters and change the DNS for PGP Desktop to point the clients to the other PGP UN server. The users would have to re-enroll to add themselves to the new PGP UN. The new PGP UN could have both AD servers under director sync, that’s not an issue whilst you migrate to a forest.

Thank you Alex_CST

This is the best option that appears to make sense.

Thank you for your help. without manipulating DNS I cannot see any other way.

D4rrell