UCS backup not loading Big IP DNS pool

Network_Virtuoso 

you should consider using platform-migrate keyword if your test LAB F5 and real/prof f5 are on different platform/hardware series etc. Also if you have a different license on prod UCS will try to restore that license on your LAB test F5 it will fail.
You have to use no-license keyword in the same load sys ucs command

tmsh
load sys ucs <filename> platform-migrate

To restore an F5 BIG-IP configuration using a UCS file while migrating to a different platform and bypassing license checks, use the tmsh command with the load sys ucs option, including no-license and platform-migrate

tmsh

load sys ucs <ucs_file_name> no-license platform-migrate

================

Note
Replace <ucs_file_name> with the actual name of your UCS file. 
no-license: This option tells the system to ignore the license check during the restore. 
platform-migrate: This option allows you to migrate the configuration to a different BIG-IP platform. 

Example: load sys ucs myconfig.ucs no-license platform-migrate 

https://my.f5.com/manage/s/article/K82540512
https://my.f5.com/manage/s/article/K13132

test and let me know for any further help