NAT IP addresses coming in the IPSec VPN to local IP addresses

Hello,

We switched my client over to a Sophos XG from an old Cisco Router. They have an IPSec tunnel to a Medical Network that hosts their Medical software/databases. The only thing I can't reproduce on the Sophos is below:

ip nat inside source static 192.0.0.7 172.16.13.113
ip nat inside source static 192.0.0.8 172.16.13.114
ip nat inside source static 192.0.0.9 172.16.13.115
ip nat inside source static 192.0.0.10 172.16.13.116

These are my client's printers that get sent jobs from the software. So the remote software sends a print job to their LAN 172.16.13.113 over the IPSEC tunnel which on my end I have to somehow NAT the 192.0.0.x addresses to the 172.16.13.x addresses and send them back to a specified IP over the VPN. 

The words from the support on the other end I am working with said "NAT IP addresses coming in the VPN to local IP addresses and make sure the return traffic from the printers get routed to the VPN. The destination IP for the return traffic is:204.26.27.10"

If anyone has any ideas I would appreciate the help!