IPSEC VPN tunnel only assigning a single IP (only single session works)

I have two installations of Fortigate 60F units for remote access.  One is running 6.4.8 and one on 7.0.5

I have IPSEC remote access configurations setup on both and the configs are nearly identical (except for the addressing...same subnetting. Nothing of consequence)
On the 6.4.8 unit I can have multiple dial-in instances each getting an address from the assigned pool.
On the 7.0.5 unit I can only establish a single connection.  I get an address out of the pool but cannot establish additional sessions.  
Both dialer instances are coming from the same office so have the same remote WAN IP.  But that is the same for the working instance.
Phase 1 and phase 2 both come up but phase 2 eventually drops.  I do believe this is related to not obtaining a second IP from the pool but cannot figure out why.