Forum Discussion
Run tmsh sys config file /var/tmp/backup.scf, which generates a single file with all configurations.
Set up your new F5 with appropriate routes, VLANS, SNAT pools etc.
Install all new SSL certs on the new F5 for every VIP. Don't try to import old ones.
Copy any objects you need from backup.scf to a new file, then edit file with needed changes.
To test if it will merge correctly with the new F5, run "tmsh load /sys config merge verify /var/tmp/bigip.conf.new". Using verify is crucial, because it doesn't commit the merge. It only tests it.
Once merge verify passes, you can run "tmsh load /sys config merge /var/tmp/bigip.conf.new" to commit.
Do the same thing for config/partitions/name/bigip.conf if you use them.
Please up-vote my answer if you find it helpful. :)
I can't understand why anything would get loaded into a new partition unless you are logged into that partition instead of common. I'm currently using 12.1.3 and am never forced to use a partition. You could try exiting that level of TMSH or in GUI change to Common (upper right). You definitely don't want to be loading these configs into a partition. It makes things much more hairy.