Lease populate and DHCP relay are different features in which are not both required to be enabled at the same time. DHCP relay can be performed without populating lease tables.
The following example displays DHCP relay configured on an IES interface:
A:ALA-48>config>service>ies>if# info
----------------------------------------------
address 10.10.42.41/24
local-proxy-arp
proxy-arp
policy-statement "ProxyARP"
exit
sap 1/1/7:0 create
anti-spoof ip
exit
arp-populate
dhcp
description "relay_ISP1"
server 10.200.10.10 10.200.10.20
lease-populate 1
no shutdown
exit
----------------------------------------------
A:ALA-48>config>service>ies>if#